This document discusses plant biology and seed structure. It explains that seeds contain an embryo and stored food to nourish the young plant. Seeds have an external coat and internal structures like the embryo, cotyledon, hypocotyl and radical. Different seeds are shown. Seed dispersal methods include wind, water, animals and explosion. Seed dormancy and the factors influencing germination like water, oxygen, temperature and light are also outlined.
seed is scientifically the mature embryo.
these powerpoint slides include the basic concepts of seed,its importance, parts of seed, composition,seed structure, seed development and embryogenesis.
seed is scientifically the mature embryo.
these powerpoint slides include the basic concepts of seed,its importance, parts of seed, composition,seed structure, seed development and embryogenesis.
germination of seed.
the slides are prepared to provide a short but valuable concept about seed germination and different conditions associated with it.
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants. The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs.
In addition to facilitating the reproduction of flowering plants, flowers have long been admired and used by humans to bring beauty to their environment, and also as objects of romance, ritual, religion, medicine and as a source of food.
In this lesson you will learn about :
1) Flower - Definition & Functions
2) Floral Symmetry
3) Pedicellate & Sessile Flowers
4) Insertion of Floral Leaves on the Thalamus
5) Parts of a Flower
6) Some Important Terms related to Flowers
7) Floral Whorls - Calyx, Corolla, Androecium and Gynoecium
8) Placentation
9) Inflorescenece
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.
Ornamental Plant are used for decorating purpose.They are available in different colors,design etc. They have a long life span and do not decay in short period of time. if you want to know more read the slide share.
Fertilization is the process of fusion of the female gamete, the ovum or egg and the male gamete produced in the pollen tube by the pollen grain. Fertilization in flowering plants was discovered by Strassburger in 1884.
Flowers are the reproductive structures of angiosperms. They vary greatly physically and are of great diversity in methods of reproduction. The process of fertilization in plants occurs when gametes in haploid conditions meet to create a zygote which is diploid.
The male gametes of the flower are transferred on to the female reproductive organs through pollinators. The final product of this process is the formation of embryo in a seed.
In this lesson you will learn about :
1) What is Fertilization?
2) The Pollen Grain (Male Gamete)
3) The Ovule (Containing Female Gamete)
4) Microsporogenesis and Megasporogenesis
5) Germination of Pollen Grain
6) Double Fertilization
7) Post Fertilization Events
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.
germination of seed.
the slides are prepared to provide a short but valuable concept about seed germination and different conditions associated with it.
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants. The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs.
In addition to facilitating the reproduction of flowering plants, flowers have long been admired and used by humans to bring beauty to their environment, and also as objects of romance, ritual, religion, medicine and as a source of food.
In this lesson you will learn about :
1) Flower - Definition & Functions
2) Floral Symmetry
3) Pedicellate & Sessile Flowers
4) Insertion of Floral Leaves on the Thalamus
5) Parts of a Flower
6) Some Important Terms related to Flowers
7) Floral Whorls - Calyx, Corolla, Androecium and Gynoecium
8) Placentation
9) Inflorescenece
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.
Ornamental Plant are used for decorating purpose.They are available in different colors,design etc. They have a long life span and do not decay in short period of time. if you want to know more read the slide share.
Fertilization is the process of fusion of the female gamete, the ovum or egg and the male gamete produced in the pollen tube by the pollen grain. Fertilization in flowering plants was discovered by Strassburger in 1884.
Flowers are the reproductive structures of angiosperms. They vary greatly physically and are of great diversity in methods of reproduction. The process of fertilization in plants occurs when gametes in haploid conditions meet to create a zygote which is diploid.
The male gametes of the flower are transferred on to the female reproductive organs through pollinators. The final product of this process is the formation of embryo in a seed.
In this lesson you will learn about :
1) What is Fertilization?
2) The Pollen Grain (Male Gamete)
3) The Ovule (Containing Female Gamete)
4) Microsporogenesis and Megasporogenesis
5) Germination of Pollen Grain
6) Double Fertilization
7) Post Fertilization Events
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.
One important function of most seeds is delayed germination, which allows time for dispersal and prevents germination of all the seeds at the same time.
The staggering of germination safeguards some seeds and seedlings from suffering damage or death from short periods of bad weather or from transient herbivores; it also allows some seeds to germinate when competition from other plants for light and water might be less intense.
Generally plants or plant structures, in order to overcome or survive against hostile environmental conditions undergo a period of dormancy with suitable modifications.
In lower plants production of endospores, zygospores, auxospores, akinetes, etc, are some of the methods involved in tiding over unfavorable conditions
Angiosperms produce seeds within the ovary and ovary itself develops into a fruit. In Gymnosperms only seeds develop.
The Science Vocabulary Pack contains everything that you need to help children in your class remember the meaning of hundreds of Science words.
With a child-friendly eBook, printable vocabulary labels, crosswords and wordsearches, it is an amazing resource for teachers! Download this pack now from http://teachr.co/sciencevocabularypack
The ovules after fertilization develops into seeds.
Consist of an embryo, with or without endosperm and a seed coat.
Found inside a fruit.
Plants like Pteridophytes and Bryophytes do not produce seeds.
Gymnosperms do not have ovaries and produce naked seeds.
Angiosperms produce seeds having protective seed coat, food reserves(endosperm) and embryo.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
seed
1. P L A N T B I O L O G Y : Z O L J A R G A L C H I N B A T
THE SEED
2. 2
SEEDS
• Seeds contain a young, developing plant
embryo
• Seeds are covered with a protective seed
coat.
• Inside is stored food or endosperm that the
young plant uses as it begins to sprout or
germinate.
• Seeds form from ripened ovules after
fertilization
6. EMBRYO
• The embryo is what forms the new plant once the
opportune conditions are present.
7. COTYLEDON
• The cotyledon is the first
leaf that germinates.
• It is filled with stored
food that the plant uses
before it begins
photosynthesis.
• Some plants have 1
cotyledon (monocot)
and some have 2
cotyledons (dicot).
8. EPICOTYL /HYPOCOTYL
• The basis for the plant’s
stem.
• It is known as the epicotyl
above the cotyledon and a
hypocotyl below the
cotyledon.
• These grow upward in
response to light.
14. • Flowering plants have different adaptations to enable
their seeds to be dispersed as far away as possible.
• The different methods of seed dispersal are…
• by wind
• by animals
• by water
• by explosion
REPRODUCTION IN PLANTS — GETTING THE SEEDS
DISPERSED
Seed Dispersal
16. DISPERSAL BY WIND
• Some seeds are carried to a new
place by the wind. These seeds are
very light.
• The seeds of the orchid are almost
as fine as dust.
• Many have hairy growths which act
like little parachutes and carry the
seeds far away from the parent
plant.
• The seeds of the dandelion are
carried by the wind.
dandelion
Orchid
17. DISPERSAL BY WATER
• Water lily and the coconut palm are
carried by water.
• Coconuts can travel for thousands of
kilometres across seas and oceans.
• The original coconut palms on South
Sea islands grew from fruits which
were carried there from the mainland
by ocean currents.
18. DISPERSAL BY ANIMALS
• The animal eats the fruit but only the juicy
part is digested.
• The stones and pips pass through the
animal's digestive system and are excreted
to form new plants. This can be far away
from the parent plant.
• Blackberry, cherry and apple seeds are
dispersed in this way.
• Birds also like to eat fruit and they help to
disperse seeds to other areas through their
droppings.
• Squirrels collect nuts like acorns and bury
them for winter food, but they often forget
where they have buried them and these
grow into new trees.
• Some fruits like that of the burdock plant
have seeds with hooks.
• These catch on the fur of animals and are
carried away.
19. DISPERSAL BY EXPLOSION
• Some plants have pods that
explode when ripe and
shoot out the seeds.
• Lupins, gorse and broom
scatter their seeds in this
way.
• Pea and bean plants also
keep their seeds in a pod.
When the seeds are ripe
and the pod has dried, the
pod bursts open and the
peas and beans are
scattered.
20. SEED DORMANCY
What is seed dormancy?
Seed dormancy means to delay germination until
favorable environmental conditions are present for
seed germination and sprout growth.
• Types of dormancy
1. Primary dormancy delays initial seed germination
2. Secondary dormancy
21. PRIMARY DORMANCY
• Seed coat physical dormancy- is when the seed coat
prevents the seed from absorbing water.
• Seed coat mechanical dormancy- is when the seed
coat prevents the embryo from breaking through.
• Chemical dormancy- is when chemicals within the
seed coat prevent the seed from germination.
• Morphological dormancy- is when the seed has not
completed at the time the seed leaves the plant
• Physiological or intermediate dormancy- occurs
because a physiological condition is not being met.
• Deep dormancy- is when plants stay dormant until
favorable conditions are met, usually involving a period
of cooling.
• Double dormancy- is the combination of any of the
previously mentioned factors.
22. SECONDARY DORMANCY
• Secondary dormancy prevents the seed from
germinating after it absorbs water.
Is caused by temperature extremes, prolonged
darkness, prolonged light water stress, or oxygen
extremes.
23. SEED GERMINATION
• What is it?
Process that causes a seed to begin to grow
into a new plant.
• Factors influencing germination
1.Water
2.Oxygen
3.Temperature
4.Light
24.
25. WATER AND OXYGEN
Water
• Mature seeds have relatively little moisture to
prevent decay.
• Seeds usually mature in fall.
• To germinate, seeds must take in water.
Oxygen
• Oxygen in the presence of enough moisture causes
respiration to start.
• This creates energy for the germination process.
26. TEMPERATURE AND LIGHT
Temperature
• Most seeds go through a cold period before
germination.
• Helps prevent seeds from sprouting as soon as they
mature.
• Proper temp. for most seeds= 68-85 F.
Light
• Amount of light needed varies.
• Depth of seed planting influences this.
• Too deep=not enough light oxygen.
• Too shallow may=too much light.
