Sexual reproduction-in-flowering-plants
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This document discusses sexual reproduction in flowering plants. It covers topics like stamen structure, types of pollen grains, pollen development, pollen allergy, pollen products, pollen viability, megaspore development, pollination, self-pollination, cross-pollination, cleistogamous flowers, geitonogamy, wind pollination, water pollination, animal pollinated flowers including bees and beetles, fertilization, embryo development, fruits, seed advantages including long term dormancy, and apomixis.
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Sexual reproduction-in-flowering-plants
1. Sexual reproduction in flowering plants involves the transfer of pollen grains containing male gametes from the anther to the stigma.
2. Pollination can occur through self-pollination within the same flower or cross-pollination between different flowers. Many flowers rely on animals or wind for pollination.
3. After pollination and fertilization, the ovule develops into a seed which is contained within a fruit. Seeds can remain dormant for long periods and still germinate, allowing for long-term plant survival and dispersal.
Double Fertilization (Sexual Reproduction In Flowering Plants)
Short Notes to remember about sexual reproduction in flowering plants.
Covers Pollination and Fertilization, all the way to dispersal of seeds.
Pollination in plants
Pollination is very important. It leads to the creation of new seeds that grow into new plants. All plants do not have flowers. Some might have small or large flowers. The pollination process varies from plant to plant depending on the kind of flowers. Different pollinators feed on different plants and therefore pollinate different plants. Some common pollinators are bees, butterflies, birds, and moths. there are flowers which get pollinated by elephants.
Fruit pollination
fruit pollination is the very good factor for fruit production and very beneficial chapter for students and scientist. they are give more knowledge about pollination and fruit development of student
Chapter 16 Reproduction in Plants Lesson 2 - Pollination
Pollination is the transfer of pollen grains from the anther to the stigma. It can occur through self-pollination within a flower or plant or cross-pollination between plants. Flowers have adapted traits for wind or insect pollination, with wind-pollinated flowers generally having small, dry pollen and insect flowers having nectar, scent and bright colors. Cross-pollination provides genetic diversity but requires two parents, while self-pollination only requires one but can lead to inbreeding over time. Plants use various mechanisms like separate male and female plants or maturation timing to encourage outcrossing.
Pollination - types
The document discusses three types of pollination: self-pollination where pollen is transferred within the same plant, cross-pollination where pollen is transferred between different plants, and wind or insect pollination which can occur across plants. Wind-pollinated flowers have adaptations like small dull colors, no scent or nectar, very light pollen, and dangling anthers and feathery stigmas to catch drifting pollen. Insect-pollinated flowers evolve traits including bright colors, sweet scents, nectar, sticky pollen, and positioned anthers and stigmas to attract insects and ensure pollen transfer.
Pollination
There are three main types of pollination: self-pollination, where pollen is transferred within the same plant; cross-pollination, where pollen is transferred between different plants of the same species; and wind or insect pollination. Wind-pollinated flowers have adaptations like small dull colors, no scent or nectar, very light pollen, and dangling anthers and feathery stigmas to catch drifting pollen. Insect-pollinated flowers evolve traits including large colorful petals, sweet scents, nectar, moderate sticky pollen amounts, and positioned anthers and stigmas to brush pollen onto visiting insects.
Pollination Detailed Explanation with examples
Pollination and Its types with examples.Contrivances of self - Pollination and Cross - Pollination.Agents of Pollination is also clearly mentioned.The topic is clearly explained with relevant images for better understanding.
Recommended
Sexual reproduction-in-flowering-plants
1. Sexual reproduction in flowering plants involves the transfer of pollen grains containing male gametes from the anther to the stigma.
2. Pollination can occur through self-pollination within the same flower or cross-pollination between different flowers. Many flowers rely on animals or wind for pollination.
3. After pollination and fertilization, the ovule develops into a seed which is contained within a fruit. Seeds can remain dormant for long periods and still germinate, allowing for long-term plant survival and dispersal.
Double Fertilization (Sexual Reproduction In Flowering Plants)
Short Notes to remember about sexual reproduction in flowering plants.
Covers Pollination and Fertilization, all the way to dispersal of seeds.
Pollination in plants
Pollination is very important. It leads to the creation of new seeds that grow into new plants. All plants do not have flowers. Some might have small or large flowers. The pollination process varies from plant to plant depending on the kind of flowers. Different pollinators feed on different plants and therefore pollinate different plants. Some common pollinators are bees, butterflies, birds, and moths. there are flowers which get pollinated by elephants.
Fruit pollination
fruit pollination is the very good factor for fruit production and very beneficial chapter for students and scientist. they are give more knowledge about pollination and fruit development of student
Chapter 16 Reproduction in Plants Lesson 2 - Pollination
Pollination is the transfer of pollen grains from the anther to the stigma. It can occur through self-pollination within a flower or plant or cross-pollination between plants. Flowers have adapted traits for wind or insect pollination, with wind-pollinated flowers generally having small, dry pollen and insect flowers having nectar, scent and bright colors. Cross-pollination provides genetic diversity but requires two parents, while self-pollination only requires one but can lead to inbreeding over time. Plants use various mechanisms like separate male and female plants or maturation timing to encourage outcrossing.
Pollination - types
The document discusses three types of pollination: self-pollination where pollen is transferred within the same plant, cross-pollination where pollen is transferred between different plants, and wind or insect pollination which can occur across plants. Wind-pollinated flowers have adaptations like small dull colors, no scent or nectar, very light pollen, and dangling anthers and feathery stigmas to catch drifting pollen. Insect-pollinated flowers evolve traits including bright colors, sweet scents, nectar, sticky pollen, and positioned anthers and stigmas to attract insects and ensure pollen transfer.
Pollination
There are three main types of pollination: self-pollination, where pollen is transferred within the same plant; cross-pollination, where pollen is transferred between different plants of the same species; and wind or insect pollination. Wind-pollinated flowers have adaptations like small dull colors, no scent or nectar, very light pollen, and dangling anthers and feathery stigmas to catch drifting pollen. Insect-pollinated flowers evolve traits including large colorful petals, sweet scents, nectar, moderate sticky pollen amounts, and positioned anthers and stigmas to brush pollen onto visiting insects.
Pollination Detailed Explanation with examples
Pollination and Its types with examples.Contrivances of self - Pollination and Cross - Pollination.Agents of Pollination is also clearly mentioned.The topic is clearly explained with relevant images for better understanding.
Pollination
Pollination is the process of transferring pollen grains from the anther of a flower to the stigma of the same species to enable reproduction. There are two main types of pollination - cross pollination between different flowers and self pollination within the same flower. The three main means of pollination are wind, insects, and water, with each adapted to facilitate the transfer of pollen through different mechanisms like feathery stigmas, brightly colored petals, or exposed anthers. After successful pollination and fertilization, the ovary develops into a fruit containing seeds.
Investigatory project of biology on pollination in flowering plants
pollination in flowering plants is a ppt made using a creative template with the fully editable shapes and figures.
Developmental.ppt
pollination their importance advantages as well as disadvantages of types of pollination that occur in nature.
Pollination
This document discusses pollination and the different types of pollination including self-pollination, cross-pollination, and their advantages and disadvantages. It also describes the floral adaptations for different pollination mechanisms including anemophily (wind), hydrophily (water), entomophily (insects), ornithophily (birds), and chiropterophily (bats). Key adaptations include flower size, color, scent, nectar production, pollen characteristics, and timing of anther and stigma maturation.
Pollination
This document discusses pollination and was presented by the group Spartans. It defines pollination as the transfer of pollen from male to female reproductive organs in plants. The document outlines different types of pollination including self-pollination, cross-pollination, abiotic pollination via wind or water, and biotic pollination via insects, birds, bats, or humans. It discusses the importance and advantages and disadvantages of self-pollination and cross-pollination. The document also discusses factors that affect pollination, artificial means of pollination, problems with pollination, and solutions to improve pollination.
Pollination and fertilization
1. Pollination is the transfer of pollen grains from the anther to the stigma and can occur through self-pollination or cross-pollination.
2. Self-pollination includes autogamy, where pollen falls on the same flower's stigma, and geitonogamy, where pollen falls on another flower of the same plant. Cross-pollination involves pollen transfer between flowers of different plants.
3. For fertilization to occur, the pollen grain must germinate and send a pollen tube to the ovule, where double fertilization takes place with one sperm fusing with the egg and one with the polar nuclei. This leads to
Reproduction in flowering plants
The parts of a flower include sepals, petals, stamens and carpels. Stamens contain pollen grains and carpels grow into fruits containing seeds. Flowering plants use wind, insects, bats, birds and mammals to transfer pollen from stamens to pistils to pollinate the flower. Pollination allows fertilization to occur, where pollen grains grow down the pistil to reach ovules, resulting in fertilized ovules that develop into seeds housed within the fruit. Some flowers rely on wind pollination instead of insects, and seeds are dispersed in various ways including by wind, explosion, water, birds and animals.
AGENCIES OF POLLINATION SMG
Pollination agents - Biotic - Zoophily: Entomophily - adaptations , types; malacophily, ornithophily, chiropterophily, pollination by other animals; abiotic pollination- Anemophily , Hydrophily
POLLINATION :Biology Investigatory project
The document summarizes types of pollination in plants. It discusses:
1) Self-pollination, which occurs within the same flower or between flowers on the same plant, promoting maintenance of parental traits.
2) Cross-pollination, which transfers pollen between genetically different flowers, introducing new traits but requiring external agents.
3) Biotic agents of pollination like insects, birds, and abiotic agents like wind and water that carry pollen grains from anthers to stigmas.
Pollination
Sexual reproduction in angiosperms involves male and female gametes produced by flowers. The male part, the stamen, produces pollen grains in the anther. The female part, the carpel, contains the stigma, style and ovary with one or more ovules containing female gametes. Pollination is the transfer of pollen grains from the anther to the stigma, which can be self-pollination within the same flower or cross-pollination between different flowers. Fertilization occurs when the male gametes from the pollen tube fuse with the female gamete in the ovule, forming a zygote.
Plants And Pollination Biology
The document discusses the evolution and diversity of flowering plants and their relationships with pollinators. It covers the structure of flowers, different pollination mechanisms like wind and animal pollination, floral rewards, mating systems, and factors that influence the type of pollinator a plant attracts like color, scent, and shape. Pollination syndromes are patterns of traits that attract specific pollinators, though plants can attract generalists too. Reproduction in plants involves sexual and asexual mechanisms, and plant gender systems range from hermaphroditic to dioecious.
Pollination ppt
The document discusses two main types of pollination: autogamy (self-pollination) and allogamy (cross-pollination). Autogamy occurs when a pollen grain is transferred from the anther to the stigma of the same flower and is promoted by traits like bisexuality, homogamy, cleistogamy, and chasmogamy. Allogamy involves transfer of pollen between different plants and is encouraged by dicliny, dichogamy, heterostyly, herkogamy, and self-incompatibility. The mode of pollination influences plant breeding by affecting gene action, genetic constitution, adaptability, genetic purity, and gene transfer.
Pollination
Pollination in plants is the process where pollen is transferred from the anther, the male part of a flower, to the stigma, the female part of a flower. Pollen can be transferred to one plant or even a nearby plant so that they can get fertilized and make more flowers. This happens in plants that have flowers called angiosperms.
In this lesson you will learn about :
1) What is Pollination?
2) Types of Pollination
3) Self-Pollination
- Adaptations for Self-Pollination
- Advantages and Disadvantages of Self-Pollination
4) Cross-Pollination
- Adaptations for Cross-Pollination
- Advantages and Disadvantages of Cross-Pollination
5) Agents of Cross-Pollination
- Entomophilous
- Anemophilous
- Hydrophilous
6) Artificial Pollination
I hope this document is helpful to you. Please share the document with your friends if you think this will benefit them. Get ready for the next lesson. Thanks.
Pollination.
Pollination is the transfer of pollen grains from the stamen to the stigma of a flower. There are two main types of pollination: cross-pollination which is the transfer of pollen between two different plants, and self-pollination which is the transfer of pollen within the same flower or plant. Pollination can be carried out by insects, wind or water, with the main agents being insects like bees and butterflies, or the wind. Insect-pollinated flowers tend to be large, brightly colored with scents to attract insects, while wind-pollinated flowers are smaller and dull colored without scents.
Plant reproduction with qn
This document discusses plant reproduction through flowering plants and non-flowering plants. It describes that flowering plants reproduce through seeds which form after pollination and fertilization of flowers. The male parts of flowers produce pollen which fertilizes the female parts, leading to seed and fruit formation. Seeds later germinate into seedlings and grow into adult plants. Non-flowering plants reproduce through spores, underground stems, suckers or leaf buds. The full life cycle from seed to adult plant is depicted in a diagram.
Pollination : Types and significance
Pollination : Types and significance.
The Seminar presented by Biswajit Das
L.T.K. College, Department of Botany.
In order that a plant is able to produce seeds, the male and female gametes must come together.
The male gamete is produced by the androecium within the pollen grain, while the female gamete is produced by the gynoecium within the ovule.
Pollination is the process that helps in bringing male and female gametes together.
Self-pollination and cross-pollination are two major ways. Flowering plants are adapted to use vivid agents, like biotic and abiotic.
.............................................................. Thank You.
Pollination
This document discusses pollination, defining it as the transfer of pollen grains from the anther to the stigma of a flower. It describes the two main types of pollination - self-pollination and cross-pollination. Self-pollination involves the transfer of pollen grains within or between flowers on the same plant, while cross-pollination involves the transfer between genetically different plants. The document outlines various pollination mechanisms like anemophily, entomophily and ornithophily and discusses the adaptations of flowers to each. It also describes methods to ensure cross-pollination and the importance and process of artificial pollination as well as coevolution between flowers and
Reproduction in Lower and Higher plants
This document provides information about sexual reproduction in plants. It discusses the processes of meiosis, gamete formation, fertilization and embryogenesis. It describes the structures and functions of flowers and their reproductive parts. It explains microsporogenesis and megasporogenesis, and the development of pollen and embryo sacs. The document also covers types of pollination including self-pollination, cross-pollination and various pollination mechanisms. Finally, it discusses outbreeding devices in plants to promote cross-pollination.
Inflorescence, Flower, Flower structures, Mode of Pollination, Seed fromation...
Inflorescence, Flower, Flower structures, Mode of Pollination, Seed fromation...The University of Agriculture Peshawar
This document summarizes the inflorescence, flowers, seed formation, and seed parts of pearl millet plants. It describes that pearl millet has a panicle inflorescence that can take different shapes and contains spikelets with 2-4 flowers. Each flower has staminate and hermaphrodite forms. Pollination occurs through the wind and is protogynous. Seeds form in a caryopsis and vary in shape, color, and size depending on their position in the panicle. Seed development progresses through stages until maturity.Vegetative reproduction on plants
This document discusses different methods of vegetative reproduction in plants. It describes bulbs, which are underground storage organs that can grow into new plants. Tubers are also storage organs and can be stem or root tubers; stem tubers have "eyes" that develop into plants while root tubers produce only one new plant. Runners, or stolons, are above-ground stems that develop roots to form new plants. Rhizomes are underground stems that similarly develop into new plants, such as in ginger plants.
POLLINATION.pptx
Pollination involves the transfer of pollen grains from the anther to the stigma and is essential for fertilization. There are three types of pollination: autogamy within the same flower, geitonogamy between flowers on the same plant, and xenogamy/cross-pollination between plants. Many plants have mechanisms like separated sex organs or self-incompatibility to encourage outbreeding and genetic diversity through cross-pollination. Pollination can be facilitated by abiotic agents like wind or water, or biotic agents like insects, birds, and other animals that are attracted to floral rewards like nectar and pollen. Pollination is vital for seed and fruit production, which benefits both
Botanical Sex In The Garden
Gardeners love to watch flowers and pollinators. Program describes pollinator-plant associations and provides some of the botanical science of pollination mechanisms
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Pollination
Pollination is the process of transferring pollen grains from the anther of a flower to the stigma of the same species to enable reproduction. There are two main types of pollination - cross pollination between different flowers and self pollination within the same flower. The three main means of pollination are wind, insects, and water, with each adapted to facilitate the transfer of pollen through different mechanisms like feathery stigmas, brightly colored petals, or exposed anthers. After successful pollination and fertilization, the ovary develops into a fruit containing seeds.
Investigatory project of biology on pollination in flowering plants
pollination in flowering plants is a ppt made using a creative template with the fully editable shapes and figures.
Developmental.ppt
pollination their importance advantages as well as disadvantages of types of pollination that occur in nature.
Pollination
This document discusses pollination and the different types of pollination including self-pollination, cross-pollination, and their advantages and disadvantages. It also describes the floral adaptations for different pollination mechanisms including anemophily (wind), hydrophily (water), entomophily (insects), ornithophily (birds), and chiropterophily (bats). Key adaptations include flower size, color, scent, nectar production, pollen characteristics, and timing of anther and stigma maturation.
Pollination
This document discusses pollination and was presented by the group Spartans. It defines pollination as the transfer of pollen from male to female reproductive organs in plants. The document outlines different types of pollination including self-pollination, cross-pollination, abiotic pollination via wind or water, and biotic pollination via insects, birds, bats, or humans. It discusses the importance and advantages and disadvantages of self-pollination and cross-pollination. The document also discusses factors that affect pollination, artificial means of pollination, problems with pollination, and solutions to improve pollination.
Pollination and fertilization
1. Pollination is the transfer of pollen grains from the anther to the stigma and can occur through self-pollination or cross-pollination.
2. Self-pollination includes autogamy, where pollen falls on the same flower's stigma, and geitonogamy, where pollen falls on another flower of the same plant. Cross-pollination involves pollen transfer between flowers of different plants.
3. For fertilization to occur, the pollen grain must germinate and send a pollen tube to the ovule, where double fertilization takes place with one sperm fusing with the egg and one with the polar nuclei. This leads to
Reproduction in flowering plants
The parts of a flower include sepals, petals, stamens and carpels. Stamens contain pollen grains and carpels grow into fruits containing seeds. Flowering plants use wind, insects, bats, birds and mammals to transfer pollen from stamens to pistils to pollinate the flower. Pollination allows fertilization to occur, where pollen grains grow down the pistil to reach ovules, resulting in fertilized ovules that develop into seeds housed within the fruit. Some flowers rely on wind pollination instead of insects, and seeds are dispersed in various ways including by wind, explosion, water, birds and animals.
AGENCIES OF POLLINATION SMG
Pollination agents - Biotic - Zoophily: Entomophily - adaptations , types; malacophily, ornithophily, chiropterophily, pollination by other animals; abiotic pollination- Anemophily , Hydrophily
POLLINATION :Biology Investigatory project
The document summarizes types of pollination in plants. It discusses:
1) Self-pollination, which occurs within the same flower or between flowers on the same plant, promoting maintenance of parental traits.
2) Cross-pollination, which transfers pollen between genetically different flowers, introducing new traits but requiring external agents.
3) Biotic agents of pollination like insects, birds, and abiotic agents like wind and water that carry pollen grains from anthers to stigmas.
Pollination
Sexual reproduction in angiosperms involves male and female gametes produced by flowers. The male part, the stamen, produces pollen grains in the anther. The female part, the carpel, contains the stigma, style and ovary with one or more ovules containing female gametes. Pollination is the transfer of pollen grains from the anther to the stigma, which can be self-pollination within the same flower or cross-pollination between different flowers. Fertilization occurs when the male gametes from the pollen tube fuse with the female gamete in the ovule, forming a zygote.
Plants And Pollination Biology
The document discusses the evolution and diversity of flowering plants and their relationships with pollinators. It covers the structure of flowers, different pollination mechanisms like wind and animal pollination, floral rewards, mating systems, and factors that influence the type of pollinator a plant attracts like color, scent, and shape. Pollination syndromes are patterns of traits that attract specific pollinators, though plants can attract generalists too. Reproduction in plants involves sexual and asexual mechanisms, and plant gender systems range from hermaphroditic to dioecious.
Pollination ppt
The document discusses two main types of pollination: autogamy (self-pollination) and allogamy (cross-pollination). Autogamy occurs when a pollen grain is transferred from the anther to the stigma of the same flower and is promoted by traits like bisexuality, homogamy, cleistogamy, and chasmogamy. Allogamy involves transfer of pollen between different plants and is encouraged by dicliny, dichogamy, heterostyly, herkogamy, and self-incompatibility. The mode of pollination influences plant breeding by affecting gene action, genetic constitution, adaptability, genetic purity, and gene transfer.
Pollination
Pollination in plants is the process where pollen is transferred from the anther, the male part of a flower, to the stigma, the female part of a flower. Pollen can be transferred to one plant or even a nearby plant so that they can get fertilized and make more flowers. This happens in plants that have flowers called angiosperms.
In this lesson you will learn about :
1) What is Pollination?
2) Types of Pollination
3) Self-Pollination
- Adaptations for Self-Pollination
- Advantages and Disadvantages of Self-Pollination
4) Cross-Pollination
- Adaptations for Cross-Pollination
- Advantages and Disadvantages of Cross-Pollination
5) Agents of Cross-Pollination
- Entomophilous
- Anemophilous
- Hydrophilous
6) Artificial Pollination
I hope this document is helpful to you. Please share the document with your friends if you think this will benefit them. Get ready for the next lesson. Thanks.
Pollination.
Pollination is the transfer of pollen grains from the stamen to the stigma of a flower. There are two main types of pollination: cross-pollination which is the transfer of pollen between two different plants, and self-pollination which is the transfer of pollen within the same flower or plant. Pollination can be carried out by insects, wind or water, with the main agents being insects like bees and butterflies, or the wind. Insect-pollinated flowers tend to be large, brightly colored with scents to attract insects, while wind-pollinated flowers are smaller and dull colored without scents.
Plant reproduction with qn
This document discusses plant reproduction through flowering plants and non-flowering plants. It describes that flowering plants reproduce through seeds which form after pollination and fertilization of flowers. The male parts of flowers produce pollen which fertilizes the female parts, leading to seed and fruit formation. Seeds later germinate into seedlings and grow into adult plants. Non-flowering plants reproduce through spores, underground stems, suckers or leaf buds. The full life cycle from seed to adult plant is depicted in a diagram.
Pollination : Types and significance
Pollination : Types and significance.
The Seminar presented by Biswajit Das
L.T.K. College, Department of Botany.
In order that a plant is able to produce seeds, the male and female gametes must come together.
The male gamete is produced by the androecium within the pollen grain, while the female gamete is produced by the gynoecium within the ovule.
Pollination is the process that helps in bringing male and female gametes together.
Self-pollination and cross-pollination are two major ways. Flowering plants are adapted to use vivid agents, like biotic and abiotic.
.............................................................. Thank You.
Pollination
This document discusses pollination, defining it as the transfer of pollen grains from the anther to the stigma of a flower. It describes the two main types of pollination - self-pollination and cross-pollination. Self-pollination involves the transfer of pollen grains within or between flowers on the same plant, while cross-pollination involves the transfer between genetically different plants. The document outlines various pollination mechanisms like anemophily, entomophily and ornithophily and discusses the adaptations of flowers to each. It also describes methods to ensure cross-pollination and the importance and process of artificial pollination as well as coevolution between flowers and
Reproduction in Lower and Higher plants
This document provides information about sexual reproduction in plants. It discusses the processes of meiosis, gamete formation, fertilization and embryogenesis. It describes the structures and functions of flowers and their reproductive parts. It explains microsporogenesis and megasporogenesis, and the development of pollen and embryo sacs. The document also covers types of pollination including self-pollination, cross-pollination and various pollination mechanisms. Finally, it discusses outbreeding devices in plants to promote cross-pollination.
Inflorescence, Flower, Flower structures, Mode of Pollination, Seed fromation...
Inflorescence, Flower, Flower structures, Mode of Pollination, Seed fromation...The University of Agriculture Peshawar
This document summarizes the inflorescence, flowers, seed formation, and seed parts of pearl millet plants. It describes that pearl millet has a panicle inflorescence that can take different shapes and contains spikelets with 2-4 flowers. Each flower has staminate and hermaphrodite forms. Pollination occurs through the wind and is protogynous. Seeds form in a caryopsis and vary in shape, color, and size depending on their position in the panicle. Seed development progresses through stages until maturity.Vegetative reproduction on plants
This document discusses different methods of vegetative reproduction in plants. It describes bulbs, which are underground storage organs that can grow into new plants. Tubers are also storage organs and can be stem or root tubers; stem tubers have "eyes" that develop into plants while root tubers produce only one new plant. Runners, or stolons, are above-ground stems that develop roots to form new plants. Rhizomes are underground stems that similarly develop into new plants, such as in ginger plants.
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Investigatory project of biology on pollination in flowering plants
Investigatory project of biology on pollination in flowering plants
Inflorescence, Flower, Flower structures, Mode of Pollination, Seed fromation...
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Similar to Sexual reproduction-in-flowering-plants
POLLINATION.pptx
Pollination involves the transfer of pollen grains from the anther to the stigma and is essential for fertilization. There are three types of pollination: autogamy within the same flower, geitonogamy between flowers on the same plant, and xenogamy/cross-pollination between plants. Many plants have mechanisms like separated sex organs or self-incompatibility to encourage outbreeding and genetic diversity through cross-pollination. Pollination can be facilitated by abiotic agents like wind or water, or biotic agents like insects, birds, and other animals that are attracted to floral rewards like nectar and pollen. Pollination is vital for seed and fruit production, which benefits both
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This document discusses various aspects of flowering plants including their cultural, social, and religious significance. It then describes the structure and development of flowers, stamens, carpels, pollen, and seeds. It explains the process of fertilization including pollen germination, growth of the pollen tube, and formation of the endosperm and embryo. Finally, it discusses different types of fruits, seeds, and seed dispersal mechanisms used by flowering plants.
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This document summarizes the process of reproduction in flowering plants. It describes the main parts of a flower including the petals, sepals, stamen and carpel. It then explains the structures of insect-pollinated and wind-pollinated flowers and how they differ in attracting pollinators. The process of pollination, fertilization and seed dispersal are outlined, from the transfer of pollen grains to the growth of seeds away from the parent plant. Key terms such as self-pollination and cross-pollination are also defined.
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Vegetative propagation allows plants to reproduce rapidly without seeds or pollination by producing genetically identical offspring through structures like bulbs, corms, rhizomes and tubers. These structures store food to support new growth. Sexual reproduction involves meiosis and fusion of male and female gametes during pollination and fertilization to produce offspring with genetic variation, aiding species survival. Angiosperms typically reproduce sexually through flowers containing stamens that produce pollen and pistils containing ovules. Successful seed germination requires water, oxygen, and warm temperatures as shown through an experiment with mung bean seeds.
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8-Pollination & Fecundation.ppt
This document provides information on pollination and fruit setting in plants. It discusses flower structure and types of flowers, including complete, incomplete, perfect, imperfect and other classifications. It describes pollen dehiscence, pistil receptivity, self-pollination, cross-pollination, fecundation, and the prerequisites and vegetative responses to successful pollination and fruit setting. Key terms defined include peduncle, receptacle, pollination, fertilization, and different types of fruit drop.
Sexual reproduction in plants
This document discusses sexual reproduction in flowering plants. It describes the structure and function of flowers, including their adaptations for insect-pollination versus wind-pollination. The process of pollination and fertilization is explained, along with the dispersal of seeds. Key parts of flowers like the stigma, style, anthers and ovaries are identified. The document also looks at the external and internal structures of seeds, as well as the conditions required for seed germination.
Plant reproduction gr. 6
This document summarizes plant reproduction. It explains that plants reproduce through flowers containing male stamen and female pistils. Pollination is the transfer of pollen grains from the anther to the stigma. Plants use insect or wind pollination depending on flower adaptations. Fertilization joins male and female plant cells to form seeds within fruits. Seeds and fruits have structures that help with dispersal away from the parent plant via wind or animals to reduce competition.
My project
The document discusses various modes of pollination in angiosperms including self-pollination, cross-pollination promoted through dioecism, dichogamy, hercogamy, heterostyly and self-sterility. It also describes the primary means of pollination as wind (anemophily) or insects (entomophily), and sometimes water. Flowers adapted for wind or insect pollination have different characteristics like perianth size and color.
Plant reproduction gr. 6 2018
This document summarizes plant reproduction. It explains that plants reproduce through flowers containing male stamens and female pistils. Pollination is the transfer of pollen grains from the anther to the stigma. Plants use insects, wind or animal dispersal to spread seeds away from the parent plant. Seed germination requires suitable temperature, oxygen and water.
$Self incompatibility
This document discusses self-incompatibility in plants. It begins by defining self-incompatibility and providing examples of plants that exhibit this trait. It then describes the different types of self-incompatibility, including those based on flower morphology (heteromorphic vs homomorphic), genes involved (monoallelic, diallelic, polyallelic), site of expression (stigmatic, stylar, ovarian), and pollen cytology (binucleate, trinucleate). The document also covers the physiological mechanisms of self-incompatibility and its importance for plant breeding through promoting outcrossing and facilitating hybrid seed production.
Flower structure, pollination, fertilization
The document discusses the reproductive parts of plants and pollination. It describes the structure of dicot and monocot flowers, including the male and female parts. It explains different types of pollination like wind, insect, bird and discusses compatible pollen. The fertilization process is outlined as pollen growing a tube to the ovary where sperm nuclei fuse with ovules to produce seeds.
life cycle of a flowering plant
This document provides an instructional media on the life cycle of flowering plants for junior high school students in Ghana. It defines key terms like pollination and fertilization and describes the male and female parts of flowers. It explains the processes of pollination, including self-pollination and cross-pollination, and the roles of different pollinators like bees, birds, bats, and wind. Diagrams and pictures are included to illustrate these concepts. The document also discusses how this instructional media will be used in the classroom, such as with projectors and printed materials.
Flower parts
The document introduces plants and their methods of reproduction. It discusses how larch, ash trees, and nettles reproduce sexually and/or asexually. It also describes the parts of a flower including the petal, nectary, ovary, stigma, style, sepal, anther, ovule, filament, and flower stem. It provides the function of each flower part.
Flower parts
The document provides information about plant reproduction and flower anatomy. It discusses how larch, ash trees, and nettles reproduce sexually and/or asexually. It also lists the parts of a flower and provides a brief description of the function of each part, including the petal, nectary, ovary, stigma, style, sepal, anther, ovule, filament, and flower stem. The document was donated to a teaching website as a free educational resource.
Plant Life Cycles of Flower bearing plant, spore bearing plant and Cone beari...
1. Plants produce flowers to reproduce through seeds. The flower's purpose is to help fertilization occur to produce fruits containing seeds.
2. There are two main types of seed-bearing plants - angiosperms which have flowering plants, and gymnosperms which include coniferous and non-flowering plants that bear seeds in cones or fruit-like structures.
3. Seed dispersal is the process by which seeds are spread to new locations by various means such as wind, water, explosion or animals to help plants colonize new areas.
Attracting Pollinators to Your Garden
What is pollination? What are pollinators important? This brochure provides tips for helping pollinators - they are responsible for assisting over 80% of the world's flowering plants!
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Plant Life Cycles of Flower bearing plant, spore bearing plant and Cone beari...
Plant Life Cycles of Flower bearing plant, spore bearing plant and Cone beari...
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Human reproduction-xii
The document provides an overview of the male and female reproductive systems including:
- Primary and secondary sex organs that produce and transport gametes in males (testes, ducts, glands) and females (ovaries, uterine tubes, uterus, vagina).
- The hormonal regulation of the testes and ovaries, including feedback loops between the hypothalamus, pituitary gland, and gonads.
- Spermatogenesis and oogenesis, the processes by which gametes are produced in the testes and ovaries.
- The ovarian and uterine cycles regulated by hormones including estrogen and progesterone. Key events like ovulation and menstruation are described.
- Fertilization and early embryonic development up
Chap 4-animal-kingdom-vishnu1
The document discusses the classification of animals based on their fundamental features like arrangement of cells, body symmetry, presence of coelom, and patterns of digestive, circulatory, and reproductive systems. It describes the different levels of organization in animals from cellular to organ system level. Key characteristics used in classification are discussed like diploblastic/triploblastic nature, symmetry, presence of coelom, segmentation, notochord, and features of important phyla like Porifera, Coelenterata, Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda and Mollusca.
THE FIBONACCI SERIES
The Fibonacci series was introduced by the Italian mathematician Fibonacci in his book Liber Abaci, where each number is the sum of the two preceding numbers, starting with 1, 1, 2, 3, 5, etc. The Fibonacci series starts with 0 and 1 and each subsequent number is the sum of the first previous numbers. It is used in many fields and can be seen in natural objects like the arrangement of petals and leaves that often follow the Fibonacci sequence of numbers.
trigonometry and application
Trigonometry is derived from Greek words meaning "three angles" and "measure". It deals with relationships between sides and angles of triangles, especially right triangles. The document discusses the history of trigonometry dating back to ancient Egypt and Babylon, and how it advanced through the works of Greek astronomer Hipparchus and Ptolemy. It also discusses the six trigonometric ratios and their formulas, various trigonometric identities, and applications of trigonometry in fields like architecture, engineering, astronomy, music, optics, and more.
geogebra
This document contains descriptions of 6 graphs with their corresponding x and y coordinates. Each graph defines a function by mapping x-values from their domain to y-values in their range. The graphs demonstrate different types of functions, including linear, constant, and piecewise functions. Geogebra is also mentioned as a tool that can be used to find the area under curves.
Atoms and molecules [autosaved]
This document discusses the history of atomic theory from ancient Indian and Greek philosophers hypothesizing about the divisibility of matter, to Democritus coining the term "atom" to refer to indivisible particles of matter. It then discusses Antoine Lavoisier establishing the laws of chemical combination including the law of conservation of mass and the law of constant proportions. John Dalton later provided his atomic theory, hypothesizing that all matter is made of atoms which are indivisible, identical for a given element, and combine in simple whole number ratios. The document then discusses concepts like atomic mass, molecules, ions, writing chemical formulas, and introduces the mole concept.
Froge and ninghtgirl
Vikram Seth is an Indian novelist and poet born in 1952 in Kolkata. He received his master's degree in economics from Stanford University in 1978 and has authored works such as The Golden Gate and A Suitable Boy. The poem tells the story of a nightingale that sings beautifully but is manipulated and exploited by a boastful frog into overexerting herself, which ultimately leads to her death.
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在线办理(lboro毕业证书)拉夫堡大学毕业证学历证书一模一样
学校原件一模一样【微信：741003700 】《(lboro毕业证书)拉夫堡大学毕业证学历证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
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◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
Peatlands of Latin America and the Caribbean
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Peatland Management in Indonesia, Science to Policy and Knowledge EducationGlobal Landscapes Forum (GLF)
Presented by Feri Johana at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland SustainablyRecycling and Disposal on SWM Raymond Einyu pptx
Increasing urbanization, rural–urban migration, rising standards of living, and rapid development associated with population growth have resulted in increased solid waste generation by industrial, domestic and other activities in Nairobi City. It has been noted in other contexts too that increasing population, changing consumption patterns, economic development, changing income, urbanization and industrialization all contribute to the increased generation of waste.
With the increasing urban population in Kenya, which is estimated to be growing at a rate higher than that of the country’s general population, waste generation and management is already a major challenge. The industrialization and urbanization process in the country, dominated by one major city – Nairobi, which has around four times the population of the next largest urban centre (Mombasa) – has witnessed an exponential increase in the generation of solid waste. It is projected that by 2030, about 50 per cent of the Kenyan population will be urban.
Aim:
A healthy, safe, secure and sustainable solid waste management system fit for a world – class city.
Improve and protect the public health of Nairobi residents and visitors.
Ecological health, diversity and productivity and maximize resource recovery through the participatory approach.
Goals:
Build awareness and capacity for source separation as essential components of sustainable waste management.
Build new environmentally sound infrastructure and systems for safe disposal of residual waste and replacing current dumpsites which should be commissioned.
Current solid waste management situation:
The status.
Solid waste generation rate is at 2240 tones / day
collection efficiently is at about 50%.
Actors i.e. city authorities, CBO’s , private firms and self-disposal
Current SWM Situation in Nairobi City:
Solid waste generation – collection – dumping
Good Practices:
• Separation – recycling – marketing.
• Open dumpsite dandora dump site through public education on source separation of waste, of which the situation can be reversed.
• Nairobi is one of the C40 cities in this respect , various actors in the solid waste management space have adopted a variety of technologies to reduce short lived climate pollutants including source separation , recycling , marketing of the recycled products.
• Through the network, it should expect to benefit from expertise of the different actors in the network in terms of applicable technologies and practices in reducing the short-lived climate pollutants.
Good practices:
Despite the dismal collection of solid waste in Nairobi city, there are practices and activities of informal actors (CBOs, CBO-SACCOs and yard shop operators) and other formal industrial actors on solid waste collection, recycling and waste reduction.
Practices and activities of these actor groups are viewed as innovations with the potential to change the way solid waste is handled.
CHALLENGES:
• Resource Allocation.
Climate Change All over the World .pptx
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
Epcon is One of the World's leading Manufacturing Companies.
Epcon is One of the World's leading Manufacturing Companies. With over 4000 installations worldwide, EPCON has been pioneering new techniques since 1977 that have become industry standards now. Founded in 1977, Epcon has grown from a one-man operation to a global leader in developing and manufacturing innovative air pollution control technology and industrial heating equipment.
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Improving the Management of Peatlands and the Capacities of Stakeholders in I...Global Landscapes Forum (GLF)
Presented by Sonya Dewi at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland SustainablyEnhanced action and stakeholder engagement for sustainable peatland management
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Presented by Jan Peters at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and ActionGlobal Peatlands Map and Hotspot Explanation Atlas
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Overview of the Global Peatlands Assessment
Presented by Patrick Scheel at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Promoting Multilateral Cooperation for Sustainable Peatland management
Presented by Agus Julianto on GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland Sustainably
原版制作(Newcastle毕业证书)纽卡斯尔大学毕业证在读证明一模一样
学校原件一模一样【微信：741003700 】《(Newcastle毕业证书)纽卡斯尔大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Recently uploaded (20)
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Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Microbial characterisation and identification, and potability of River Kuywa ...
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Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Improving the viability of probiotics by encapsulation methods for developmen...
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world-environment-day-2024-240601103559-14f4c0b4.pptx
world-environment-day-2024-240601103559-14f4c0b4.pptx
Sexual reproduction-in-flowering-plants
- 1. SEXUAL REPRODUCTION IN FLOWERING PLANTS
- 3. Types of pollen grains (A-C), Pollen grains or microspores.(A-B), Entire pollen grains;C, Pollen grain in section
- 4. Development of pollen grain
- 5. Development of pollen grain
- 6. Development of pollen grain
- 7. Pollen allergy The signs and symptoms of pollen allergy Sneezing, may be accompanied by a runny or clogged nose. Itching eyes, nose, and throat. Allergic shiners (dark circles under the eyes caused by restricted blood flow near the sinuses) The "allergic salute" (in a child, persistent upward rubbing of the nose that causes a crease mark on the nose) Watering eyes, Conjunctivitis (an inflammation of the membrane that lines the eyelids, causing red-rimmed eyes). asthma & bronchitis.
- 8. Example - pollen allergy Parthenium argentatum Parthenium hysterophorus (Carrot grass)
- 9. Pollen products Increase the Performance of athletes And race horses
- 10. Pollen viability ◦ Rice flower
- 11. Flower of wheat
- 13. Mega sporangia - ovule
- 15. Megasporogenesis
- 16. Megasporogenesis
- 17. pollination ◦ What is pollination ? ◦ Pollination is the transfer of pollen from the anthers to the stigma. The pollen may be transferred from the anthers to the stigma of the same, or different flowers.
- 18. pollination
- 20. Self pollination ◦ Requirements ◦ Synchrony in pollen release & stigma receptivity ◦ Anthers & stigma should lie close together
- 23. Cleistogamous flower (autogamous) Cleistogamous rapeseed flowers opened to varying degrees
- 24. Cleistogamous flower (autogamous) ◦ Autogamous – no chance of cross pollination ◦ Produce assured seed-set even in the absence of pollinators Is cleistogamy advantageous or disadvantageous?
- 25. Geitonogamy Transfer of pollen grains from the anther to the stigma of another flower of the same plant Genetically similar
- 26. Wind pollination
- 28. Well exposed stamen of corn cob
- 29. Feathery stigma To trap air borne pollen grains
- 30. Water pollination - hydro Philly vallisneria Female flowers Reach the Surface of the water by a long stalk. Pollen grains are released On to the surface of water
- 31. hydrilla
- 32. era-sea grass Pollen grains –long, ribbon like, covered with mucilaginous coverings Water pollinated flowers are not colorful. Do not secrete nectar. Female flowers remain Submerged in water. Pollen grains are released inside the water.
- 33. Animal pollinated flowers ◦ Bees ◦ Butterflies ◦ Flies ◦ Beetles ◦ Wasps ◦ Moths ◦ Birds ◦ Bats etc.,
- 36. Insect pollinated flowers ◦ Large,colorful,fragrant ◦ Rich in nectar ◦ When the flowers are small - inflorescence
- 37. Pollination-animals ◦ Color of the flowers ◦ fragrance
- 38. Beetle pollinated flower Flowers secrete foul Odours to Attract this animal
- 39. Flower of Amorphophallus-6ft ht Provide safe place for Laying eggs- a floral Reward apart from Nectar & pollen grains
- 40. Flower of Amorphophallus-6ft ht
- 44. Life cycle of a plant
- 47. Dicot embryo
- 48. Fruits
- 50. Lupinus arcticus Seed germinated after 10000 Years of dormancy
- 53. Apomixis grass
- 54. A Model for Apomixis in Hieracium
- 56. apomixis
- 57. polyembryony
- 58. Seeds of orange