4. Endosperm development_3.pptx with basic terminalogies
•Download as PPTX, PDF•
0 likes•45 views
Development of endosperm
Report
Share
Report
Share
Recommended
ENDOSPERM.pptx
The document discusses endosperm, which is a nutritive tissue stored in seeds to provide nutrients for the embryo. There are three main types of endosperm based on development - nuclear, cellular, and helobial. Nuclear endosperm is the most common type and involves repeated nuclear division without cell wall formation initially. Cellular endosperm involves cell wall formation after each nuclear division. Helobial endosperm involves initial division into two cells like cellular endosperm, but further divisions are like nuclear endosperm. Endosperm can also have haustorial variations and can be ruminate, with an irregularly folded surface. Endosperm plays an important role in seed nutrition and development.
Embryology
Mitosis and meiosis play key roles in development, growth, and reproduction. During development, cell differentiation occurs as gene expression changes, leading cells to take on specialized roles. Life cycles involve both haploid and diploid phases, with an evolutionary trend moving from haploid-dominant to diploid-dominant. In haplontic life cycles like Chlamydomonas, the haploid phase is multicellular and reproduces asexually via mitosis, while the diploid phase is dormant. In alternation of generations seen in Ulva, both phases are multicellular and reproduce via mitosis or meiosis.
Endosperm development
Endosperm is a nutritive tissue found in seeds after fertilization that provides nutrients for embryo development. There are three main types of endosperm: nuclear, cellular, and helobial. The endosperm can either be absorbed during embryo development, leaving the seed endospermless, or persist as a storage tissue. In some plants the endosperm stores fats, while in grains like wheat and corn it mainly stores starches. Histologically, endosperm cells are isodiametric and fill with storage materials, while some plants have an aleurone layer that secretes enzymes to aid in seed germination.
Post-Fertilization and Formation & Development of Seed and Fruit.pdf
This is a notes type content for the Maharashtra board 12th std students of subject biology. The content is the 3rd part of the 1st chapter namely "Reproduction in Lower and Higher Plants". For detail understanding the chapter and convenience or either simplicity I've separated out the chapter into three parts.
The 3rd part named as " Post-Fertilization and Formation & Development " which includes necessary items which are utmost for the board exams preparation. In this, the results from the reproduction of plants will be studying. The pictures and content I'd referred from the latest textbook of Maharashtra State board, old textbook, Internet, etc.
Egg structure, types classification and cleavage types , sperm structure
This document provides an overview of comparative embryology topics including types of eggs, sperms, cleavage, and blastula formation. It begins with classifications of eggs based on yolk amount and distribution. It then describes the structure and types of sperms in animals. The document outlines two main types of cleavage - holoblastic and meroblastic - and discusses equal and unequal holoblastic cleavage patterns. Finally, it introduces additional embryology concepts that will be covered such as gastrulation, coelom formation, and extraembryonic membranes.
Microsporangium
The document discusses the development of microsporangium, the male reproductive structure found in flowers. It begins by introducing the basic structure of the stamen, which contains the filament, anther, and connective tissue. It then describes the development of the microsporangium wall layers and the sporogenous tissue within. Finally, it explains the process of microsporogenesis, where microspore mother cells within the anther undergo meiosis and cytokinesis to form pollen grains (microspores). The pollen grains each contain a single cell with two coat layers and will function as the male gametophyte to facilitate fertilization.
Megasporogenesis
Megasporogenesis is the formation of megaspores in the megasporangium. This involves the development of the megaspore mother cell from the archesporial cell, which then undergoes meiosis to form four megaspores. One megaspore survives to form the embryo sac, which contains eight nuclei that develop into either a seven-celled structure in monosporic development types or other structures depending on the type of development. Ovules vary in structure depending on factors like the number of integuments and position of the micropyle.
Std10 Ch12-Life-cycle
Sexual reproduction involves the fusion of two gametes - one male and one female. In plants, this occurs through pollination where pollen is transferred from the anther to the stigma, and fertilization where the pollen tube delivers sperm to fuse with the egg. This restores the chromosome number and produces offspring that are genetically different from the parents, allowing for beneficial variations that help species adapt and survive changing environments. Asexual reproduction only involves one parent and mitosis, resulting in genetically identical offspring but lacks variations. Both modes are important - sexual reproduction for variations and asexual for rapid reproduction.
Recommended
ENDOSPERM.pptx
The document discusses endosperm, which is a nutritive tissue stored in seeds to provide nutrients for the embryo. There are three main types of endosperm based on development - nuclear, cellular, and helobial. Nuclear endosperm is the most common type and involves repeated nuclear division without cell wall formation initially. Cellular endosperm involves cell wall formation after each nuclear division. Helobial endosperm involves initial division into two cells like cellular endosperm, but further divisions are like nuclear endosperm. Endosperm can also have haustorial variations and can be ruminate, with an irregularly folded surface. Endosperm plays an important role in seed nutrition and development.
Embryology
Mitosis and meiosis play key roles in development, growth, and reproduction. During development, cell differentiation occurs as gene expression changes, leading cells to take on specialized roles. Life cycles involve both haploid and diploid phases, with an evolutionary trend moving from haploid-dominant to diploid-dominant. In haplontic life cycles like Chlamydomonas, the haploid phase is multicellular and reproduces asexually via mitosis, while the diploid phase is dormant. In alternation of generations seen in Ulva, both phases are multicellular and reproduce via mitosis or meiosis.
Endosperm development
Endosperm is a nutritive tissue found in seeds after fertilization that provides nutrients for embryo development. There are three main types of endosperm: nuclear, cellular, and helobial. The endosperm can either be absorbed during embryo development, leaving the seed endospermless, or persist as a storage tissue. In some plants the endosperm stores fats, while in grains like wheat and corn it mainly stores starches. Histologically, endosperm cells are isodiametric and fill with storage materials, while some plants have an aleurone layer that secretes enzymes to aid in seed germination.
Post-Fertilization and Formation & Development of Seed and Fruit.pdf
This is a notes type content for the Maharashtra board 12th std students of subject biology. The content is the 3rd part of the 1st chapter namely "Reproduction in Lower and Higher Plants". For detail understanding the chapter and convenience or either simplicity I've separated out the chapter into three parts.
The 3rd part named as " Post-Fertilization and Formation & Development " which includes necessary items which are utmost for the board exams preparation. In this, the results from the reproduction of plants will be studying. The pictures and content I'd referred from the latest textbook of Maharashtra State board, old textbook, Internet, etc.
Egg structure, types classification and cleavage types , sperm structure
This document provides an overview of comparative embryology topics including types of eggs, sperms, cleavage, and blastula formation. It begins with classifications of eggs based on yolk amount and distribution. It then describes the structure and types of sperms in animals. The document outlines two main types of cleavage - holoblastic and meroblastic - and discusses equal and unequal holoblastic cleavage patterns. Finally, it introduces additional embryology concepts that will be covered such as gastrulation, coelom formation, and extraembryonic membranes.
Microsporangium
The document discusses the development of microsporangium, the male reproductive structure found in flowers. It begins by introducing the basic structure of the stamen, which contains the filament, anther, and connective tissue. It then describes the development of the microsporangium wall layers and the sporogenous tissue within. Finally, it explains the process of microsporogenesis, where microspore mother cells within the anther undergo meiosis and cytokinesis to form pollen grains (microspores). The pollen grains each contain a single cell with two coat layers and will function as the male gametophyte to facilitate fertilization.
Megasporogenesis
Megasporogenesis is the formation of megaspores in the megasporangium. This involves the development of the megaspore mother cell from the archesporial cell, which then undergoes meiosis to form four megaspores. One megaspore survives to form the embryo sac, which contains eight nuclei that develop into either a seven-celled structure in monosporic development types or other structures depending on the type of development. Ovules vary in structure depending on factors like the number of integuments and position of the micropyle.
Std10 Ch12-Life-cycle
Sexual reproduction involves the fusion of two gametes - one male and one female. In plants, this occurs through pollination where pollen is transferred from the anther to the stigma, and fertilization where the pollen tube delivers sperm to fuse with the egg. This restores the chromosome number and produces offspring that are genetically different from the parents, allowing for beneficial variations that help species adapt and survive changing environments. Asexual reproduction only involves one parent and mitosis, resulting in genetically identical offspring but lacks variations. Both modes are important - sexual reproduction for variations and asexual for rapid reproduction.
Embryonic and post-embryonic development in insects :its structure, functions...
Embryonic and post-embryonic development in insects :its structure, functions and modification in different orders of insects
Reproductive system in plants
This document discusses reproduction in plants, including the different modes of reproduction (asexual and sexual), cell division processes (mitosis and meiosis), gamete formation, fertilization, and pollination. The key points are:
1. Reproduction can be asexual via vegetative propagation, or sexual which involves fusion of male and female gametes during pollination and fertilization.
2. Cell division occurs via mitosis, which duplicates DNA, or meiosis, which reduces chromosome number by half to form gametes.
3. Gamete formation involves microgametogenesis and megagametogenesis within pollen grains and embryo sacs respectively.
4. Fertil
Microsporogenesis
Microsporogenesis involves the formation of pollen grains in the anthers. It begins with the formation of archesporial cells that develop into primary sporogenous cells. These cells undergo mitosis and differentiate into microspore mother cells. The microspore mother cells undergo meiosis to form microspores still connected in tetrads. The tetrads separate into individual microspores which are released from the anther as mature pollen grains. Key tissues involved include the sporogenous tissue, tapetum, and anther wall layers.
Bacterial spore physiology.pdf
Bacterial spores are highly resistant structures that form during unfavorable conditions as part of the lifecycle of certain bacteria. They can survive without nutrients. Spores are formed intracellularly and are called endospores. Key spore-forming bacteria include Bacillus and Clostridium species. The spore has an outer coat, cortex, and core. Sporulation is a multi-stage process where a forespore is formed and engulfed, developing a resistant structure before being released. Endospores can remain dormant for long periods before germinating under favorable conditions.
Bacterial spore physiology.pdf
Bacterial spores are highly resistant structures that form during unfavorable conditions as part of the lifecycle of certain bacteria. They can survive without nutrients. Spores are formed intracellularly and are called endospores. Key spore-forming bacteria include Bacillus and Clostridium species. The spore structure includes a core, cortex layer, and inner and outer coatings that provide chemical and heat resistance. Sporulation is a multi-stage process where a forespore is formed and engulfed, developing protective layers before maturing into a dormant endospore. Endospores can remain dormant for long periods before germinating under favorable conditions.
Sexual reproduction in angiosperm(microsporogenesis)
This document summarizes the process of microsporogenesis and microgametogenesis in angiosperms. Microsporogenesis involves the formation of microspores (pollen grains) from microspore mother cells within the anther through meiosis. The anther contains four layers surrounding the pollen sacs: epidermis, endothecium, middle layer, and tapetum. During microgametogenesis, the pollen grain germinates and its nucleus divides to form a vegetative cell and generative cell. The generative cell then divides into two sperm cells that are delivered to the female gametophyte via a pollen tube.
Types of cotyledons, embryo and endosperm
1. The document discusses different types of endosperm, embryos, and cotyledons in plants.
2. There are three main types of endosperm based on development - nuclear, cellular, and helobial. Nuclear endosperm involves free nuclear divisions while cellular involves immediate cell wall formation.
3. Embryos can be dicot-style with two cotyledons and a radicle or monocot-style with a single scutellum cotyledon. Cotyledons are the first leaves that emerge from a germinating seed and store nutrients.
types of cleavage, blastula formation, gastrula , morphogenetic movements etc
1. Meroblastic cleavage is incomplete cell division that occurs in eggs with large amounts of yolk, like those of reptiles and birds. It results in two main types - discoidal cleavage, restricted to the cytoplasmic disc, and superficial cleavage, limited to the thin surface area.
2. During gastrulation, massive cell proliferation, movement and rearrangement occurs in the blastula, forming the three germ layers - ectoderm, endoderm and mesoderm. This involves morphogenetic cell movements that shape the embryo and form the archenteron cavity.
3. Types of morphogenetic movements include epiboly such as extension and intercalation that thin and spread
40-Tinea saginata.pptx
This document discusses the classification and characteristics of cestodes or tapeworms. It focuses on Taenia saginata, the beef tapeworm. T. saginata has a scolex, neck and strobila segments. It can grow up to 10 meters long and infects humans through eating undercooked beef containing cysticerci larvae. The tapeworm attaches to the small intestine wall and releases proglottid segments containing eggs, completing its life cycle. Diagnosis involves detecting eggs or proglottids in stool and treatment uses praziquantel.
Mycoplasma like organisms
This document summarizes key information about mollicutes, a class of bacteria that lack cell walls. It describes the initial discovery of mycoplasma-like organisms (MLOs) that cause plant diseases. The class Mollicutes is proposed, containing the orders Mycoplasmatales and Spiroplasmataceae. True mycoplasma are bounded by a single membrane, are very small in size, and can be grown in artificial media. Spiroplasma are helical shaped and can move. Phytoplasma infect plant cells and are transmitted by insect vectors but cannot be grown in culture. The document provides details on the structure, properties, classification, and examples of diseases caused by
Sexual reproduction in flowering plants
Flowering plants reproduce sexually through a process involving flowers, pollen, and double fertilization. Flowers contain reproductive organs including stamens which produce pollen inside anthers. Pollen grains contain male gametes that develop inside pistils after pollination. Double fertilization involves one male gamete fusing with the egg cell to form the embryo, and the other with polar nuclei to form endosperm tissue. The fertilized ovule develops into a seed containing the embryo and food reserves. Fruits form from the ripened ovary and contain seeds, completing the plant life cycle.
An introduction to embryology of angiosperms
This document provides an overview of angiosperm embryology, including:
- Sporogenesis and gametogenesis, which produce haploid spores and gametes from diploid tissues in the anther and ovary.
- Anther and ovule development, including formation of protective layers and meiotic divisions producing microspores and megaspores.
- Microgametogenesis and megagametogenesis, where spores develop into pollen grains or the embryo sac containing eggs.
- Double fertilization, where one sperm fuses with the egg and the other with polar nuclei to form the triploid endosperm.
- Embryo and seed development from the zygote and endos
ASEXUAL REPRODUCTION
Asexual reproduction is the production of new individuals from a single parent. This type of reproduction is generally observed in single-celled organisms. Here no fusion of gametes is involved and a single parent divides into two or more daughter cells. The offsprings produced are genetically and physically identical to the parent and are known as clones.
embryonic development in chick.pptx
This is a slide for complete development in chick ,as chick is a vertebrate so with the help of the development in a chick we can we can understand development in vertebrates .
This topic explains the whole process of growth and development in animal the processes include
Fertilization and incubation
Cleavage
Morula
Blastula
Gastrulation
Notochord And Mesoderm Formation
Neurulation
2. anthocerospp
- Anthoceros is a genus of about 200 species of hornworts that are terrestrial and cosmopolitan.
- They grow in very moist and shady places like slopes, rocks, or sides of ditches. Some species are also found growing on decaying wood.
- Anthoceros reproduces both vegetatively through tubers, gemmae, and persistent apices, and sexually through antheridia and archegonia leading to the formation of sporophytes and spores.
kingdoms of life
The document describes the six kingdoms of life: Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia. Organisms are classified based on three factors - cell type (prokaryotic or eukaryotic), cell number (unicellular or multicellular), and feeding type (autotroph or heterotroph). Each kingdom is then described in 1-2 sentences highlighting their key characteristics.
Sexual reproduction in flowering plants
- The document discusses the structures and processes involved in plant fertilization before fertilization occurs, including the development of male and female reproductive structures in flowers.
- It describes in detail the structures of the stamen (pollen sac and pollen grain), pistil, ovule, and embryo sac. Key processes like microsporogenesis, megaspore formation, and double fertilization are summarized.
- Various mechanisms of pollination like autogamy, geitonogamy, xenogamy and biotic/abiotic pollination agents are covered. Outbreeding devices in plants to promote cross-pollination and prevent inbreeding are also mentioned.
Megasporogenesis by Anurag yadav
MEGASPOROGENESIS, DEVELOPMENT OF EMBRYO SAC , SUBCELLULAR DETAILS OF CONSTITUENT CELLS AND THEIR FUNCTION, MAJOR TYPES
Double fertilization & triple fusion
This document discusses double fertilization and endosperm development in plants. It explains that double fertilization involves one male gamete fusing with the egg to form a diploid zygote, and the other fusing with the central cell's polar nuclei to form a triploid endosperm nucleus. This triggers endosperm development, which provides nourishment for the developing embryo. The document outlines three types of endosperm - nuclear, cellular, and helobial - based on whether cell walls form during division of the primary endosperm nucleus.
Hindi varnamala | hindi alphabet PPT.pdf
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
More Related Content
Similar to 4. Endosperm development_3.pptx with basic terminalogies
Embryonic and post-embryonic development in insects :its structure, functions...
Embryonic and post-embryonic development in insects :its structure, functions and modification in different orders of insects
Reproductive system in plants
This document discusses reproduction in plants, including the different modes of reproduction (asexual and sexual), cell division processes (mitosis and meiosis), gamete formation, fertilization, and pollination. The key points are:
1. Reproduction can be asexual via vegetative propagation, or sexual which involves fusion of male and female gametes during pollination and fertilization.
2. Cell division occurs via mitosis, which duplicates DNA, or meiosis, which reduces chromosome number by half to form gametes.
3. Gamete formation involves microgametogenesis and megagametogenesis within pollen grains and embryo sacs respectively.
4. Fertil
Microsporogenesis
Microsporogenesis involves the formation of pollen grains in the anthers. It begins with the formation of archesporial cells that develop into primary sporogenous cells. These cells undergo mitosis and differentiate into microspore mother cells. The microspore mother cells undergo meiosis to form microspores still connected in tetrads. The tetrads separate into individual microspores which are released from the anther as mature pollen grains. Key tissues involved include the sporogenous tissue, tapetum, and anther wall layers.
Bacterial spore physiology.pdf
Bacterial spores are highly resistant structures that form during unfavorable conditions as part of the lifecycle of certain bacteria. They can survive without nutrients. Spores are formed intracellularly and are called endospores. Key spore-forming bacteria include Bacillus and Clostridium species. The spore has an outer coat, cortex, and core. Sporulation is a multi-stage process where a forespore is formed and engulfed, developing a resistant structure before being released. Endospores can remain dormant for long periods before germinating under favorable conditions.
Bacterial spore physiology.pdf
Bacterial spores are highly resistant structures that form during unfavorable conditions as part of the lifecycle of certain bacteria. They can survive without nutrients. Spores are formed intracellularly and are called endospores. Key spore-forming bacteria include Bacillus and Clostridium species. The spore structure includes a core, cortex layer, and inner and outer coatings that provide chemical and heat resistance. Sporulation is a multi-stage process where a forespore is formed and engulfed, developing protective layers before maturing into a dormant endospore. Endospores can remain dormant for long periods before germinating under favorable conditions.
Sexual reproduction in angiosperm(microsporogenesis)
This document summarizes the process of microsporogenesis and microgametogenesis in angiosperms. Microsporogenesis involves the formation of microspores (pollen grains) from microspore mother cells within the anther through meiosis. The anther contains four layers surrounding the pollen sacs: epidermis, endothecium, middle layer, and tapetum. During microgametogenesis, the pollen grain germinates and its nucleus divides to form a vegetative cell and generative cell. The generative cell then divides into two sperm cells that are delivered to the female gametophyte via a pollen tube.
Types of cotyledons, embryo and endosperm
1. The document discusses different types of endosperm, embryos, and cotyledons in plants.
2. There are three main types of endosperm based on development - nuclear, cellular, and helobial. Nuclear endosperm involves free nuclear divisions while cellular involves immediate cell wall formation.
3. Embryos can be dicot-style with two cotyledons and a radicle or monocot-style with a single scutellum cotyledon. Cotyledons are the first leaves that emerge from a germinating seed and store nutrients.
types of cleavage, blastula formation, gastrula , morphogenetic movements etc
1. Meroblastic cleavage is incomplete cell division that occurs in eggs with large amounts of yolk, like those of reptiles and birds. It results in two main types - discoidal cleavage, restricted to the cytoplasmic disc, and superficial cleavage, limited to the thin surface area.
2. During gastrulation, massive cell proliferation, movement and rearrangement occurs in the blastula, forming the three germ layers - ectoderm, endoderm and mesoderm. This involves morphogenetic cell movements that shape the embryo and form the archenteron cavity.
3. Types of morphogenetic movements include epiboly such as extension and intercalation that thin and spread
40-Tinea saginata.pptx
This document discusses the classification and characteristics of cestodes or tapeworms. It focuses on Taenia saginata, the beef tapeworm. T. saginata has a scolex, neck and strobila segments. It can grow up to 10 meters long and infects humans through eating undercooked beef containing cysticerci larvae. The tapeworm attaches to the small intestine wall and releases proglottid segments containing eggs, completing its life cycle. Diagnosis involves detecting eggs or proglottids in stool and treatment uses praziquantel.
Mycoplasma like organisms
This document summarizes key information about mollicutes, a class of bacteria that lack cell walls. It describes the initial discovery of mycoplasma-like organisms (MLOs) that cause plant diseases. The class Mollicutes is proposed, containing the orders Mycoplasmatales and Spiroplasmataceae. True mycoplasma are bounded by a single membrane, are very small in size, and can be grown in artificial media. Spiroplasma are helical shaped and can move. Phytoplasma infect plant cells and are transmitted by insect vectors but cannot be grown in culture. The document provides details on the structure, properties, classification, and examples of diseases caused by
Sexual reproduction in flowering plants
Flowering plants reproduce sexually through a process involving flowers, pollen, and double fertilization. Flowers contain reproductive organs including stamens which produce pollen inside anthers. Pollen grains contain male gametes that develop inside pistils after pollination. Double fertilization involves one male gamete fusing with the egg cell to form the embryo, and the other with polar nuclei to form endosperm tissue. The fertilized ovule develops into a seed containing the embryo and food reserves. Fruits form from the ripened ovary and contain seeds, completing the plant life cycle.
An introduction to embryology of angiosperms
This document provides an overview of angiosperm embryology, including:
- Sporogenesis and gametogenesis, which produce haploid spores and gametes from diploid tissues in the anther and ovary.
- Anther and ovule development, including formation of protective layers and meiotic divisions producing microspores and megaspores.
- Microgametogenesis and megagametogenesis, where spores develop into pollen grains or the embryo sac containing eggs.
- Double fertilization, where one sperm fuses with the egg and the other with polar nuclei to form the triploid endosperm.
- Embryo and seed development from the zygote and endos
ASEXUAL REPRODUCTION
Asexual reproduction is the production of new individuals from a single parent. This type of reproduction is generally observed in single-celled organisms. Here no fusion of gametes is involved and a single parent divides into two or more daughter cells. The offsprings produced are genetically and physically identical to the parent and are known as clones.
embryonic development in chick.pptx
This is a slide for complete development in chick ,as chick is a vertebrate so with the help of the development in a chick we can we can understand development in vertebrates .
This topic explains the whole process of growth and development in animal the processes include
Fertilization and incubation
Cleavage
Morula
Blastula
Gastrulation
Notochord And Mesoderm Formation
Neurulation
2. anthocerospp
- Anthoceros is a genus of about 200 species of hornworts that are terrestrial and cosmopolitan.
- They grow in very moist and shady places like slopes, rocks, or sides of ditches. Some species are also found growing on decaying wood.
- Anthoceros reproduces both vegetatively through tubers, gemmae, and persistent apices, and sexually through antheridia and archegonia leading to the formation of sporophytes and spores.
kingdoms of life
The document describes the six kingdoms of life: Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia. Organisms are classified based on three factors - cell type (prokaryotic or eukaryotic), cell number (unicellular or multicellular), and feeding type (autotroph or heterotroph). Each kingdom is then described in 1-2 sentences highlighting their key characteristics.
Sexual reproduction in flowering plants
- The document discusses the structures and processes involved in plant fertilization before fertilization occurs, including the development of male and female reproductive structures in flowers.
- It describes in detail the structures of the stamen (pollen sac and pollen grain), pistil, ovule, and embryo sac. Key processes like microsporogenesis, megaspore formation, and double fertilization are summarized.
- Various mechanisms of pollination like autogamy, geitonogamy, xenogamy and biotic/abiotic pollination agents are covered. Outbreeding devices in plants to promote cross-pollination and prevent inbreeding are also mentioned.
Megasporogenesis by Anurag yadav
MEGASPOROGENESIS, DEVELOPMENT OF EMBRYO SAC , SUBCELLULAR DETAILS OF CONSTITUENT CELLS AND THEIR FUNCTION, MAJOR TYPES
Double fertilization & triple fusion
This document discusses double fertilization and endosperm development in plants. It explains that double fertilization involves one male gamete fusing with the egg to form a diploid zygote, and the other fusing with the central cell's polar nuclei to form a triploid endosperm nucleus. This triggers endosperm development, which provides nourishment for the developing embryo. The document outlines three types of endosperm - nuclear, cellular, and helobial - based on whether cell walls form during division of the primary endosperm nucleus.
Similar to 4. Endosperm development_3.pptx with basic terminalogies (20)
Embryonic and post-embryonic development in insects :its structure, functions...
Embryonic and post-embryonic development in insects :its structure, functions...
Sexual reproduction in angiosperm(microsporogenesis)
Sexual reproduction in angiosperm(microsporogenesis)
types of cleavage, blastula formation, gastrula , morphogenetic movements etc
types of cleavage, blastula formation, gastrula , morphogenetic movements etc
Senior High School Material Mitosis an Asexual Reproduction.ppt
Senior High School Material Mitosis an Asexual Reproduction.ppt
Recently uploaded
Hindi varnamala | hindi alphabet PPT.pdf
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
Community pharmacy- Social and preventive pharmacy UNIT 5
Covered community pharmacy topic of the subject Social and preventive pharmacy for Diploma and Bachelor of pharmacy
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...National Information Standards Organization (NISO)
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS Template 2023-2024 by: Irene S. Rueco
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingExcellence Foundation for South Sudan
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.How to Build a Module in Odoo 17 Using the Scaffold Method
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar KanvariaThe simplified electron and muon model, Oscillating Spacetime: The Foundation...
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
DRUGS AND ITS classification slide share
Any substance (other than food) that is used to prevent, diagnose, treat, or relieve symptoms of a
disease or abnormal condition
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Recently uploaded (20)
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Community pharmacy- Social and preventive pharmacy UNIT 5
Community pharmacy- Social and preventive pharmacy UNIT 5
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
How to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold Method
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
The simplified electron and muon model, Oscillating Spacetime: The Foundation...
The simplified electron and muon model, Oscillating Spacetime: The Foundation...
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
4. Endosperm development_3.pptx with basic terminalogies
- 1. Endosperm development • Endosperm development generally precedes embryo development • The fate of endosperm depends upon the species • Beans, cotton or Brassicas • Castor bean, tomato, carrot • Cereal grains
- 2. Morphological variation of endosperms T obacco Endosperm Embryo Most dicots: large cotyledons, small endosperms. Carrot seed
- 3. Types of endosperm formation • Nuclear/non-cellular type: Free nuclear division gives rise to many nuclei and walls may or not form e.g., most of monocots and some dicots • Cellular type: Cell walls form immediately after the first nuclear division and continue to do so as the endosperm grows e.g., most of dicots and some monocots • Helobial type: regarded as intermediate restricted to few monocots
- 5. Developmental domains 1. Transfer cells 2. Embryo surrounding regions (ESR) 3. Aleurone layer cells 4. Starchy endosperm cells Maize Barley
- 7. Endosperm development •Begin with the fertilized polar nuclei •Triploid Micropyle Antipodal cells Polar nuclei Synergids Double fertilization Egg Mature ovule Pollen tube
- 8. The cereal endosperm coenocyte
- 9. Cellularization of the Endosperm Coenocyte
- 10. Endosperm development in dicots • Endosperm development in dicots is ephemeral in many species • Two views about evolution of endosperm • Endosperm is derived from a primitive embryo • Endosperm is thought to be comparable with megagametophyte
- 11. The Arabidopsis endosperm coenocyte