Seeds are of different shapes, sizes, colours and
textures.
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Some seeds have only one seeds while others have a number of
seeds
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Seeds are used as spices, food grains,pulses. SPICESpulses FOOD
GRAINS
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Some plants can grow without seeds MONEYPLANT ROSE
BOGAINVILLAE
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There are somep plants which trap and eat frogs,insects and
mice. The pitcher plant(Nepenthse) is one such plant.It is found in
Australia, Indonesia and Meghalaya in India.
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SEED DISPERSAL BY WIND Seeds are light. They are flown from one
place to another by wind. Some seeds have hair and wings over their
covering. They help them to fly long distances.
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DISPERSAL BY WIND
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Seeds dispersal by water Some seeds grow near a river, lake and
sea. Their fruits or seeds fall into water and carried away over
long distances.
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Seeds Dispersal by birds, animals and human beings. Animals,
birds and human beings after eating a fruits and vegetables,
generally leave behind or throw away the seeds present inside them.
These seeds either grow into a plant there itself or carried from
one place to another by wind and water. Some seeds are not
digestible, so the birds and animals pass out these seeds in their
droppings at different places. These seeds get dispersed. Some
seeds have hook and spies They stick to the body of the animals or
to the peoples clothings and are carried to different places
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BIRDS ANIMALS HUMAN BEINGS
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FROM SEED TO SEEDLING
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STRUCTURE OF A SEED EMBRYO COTYLEDONS SEED COAT
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STRUCTURE OF A SEED SEED COAT--- PROTECTS THE SEED COTYLEDON---
SUPPLY FOOD TO THE BABY PLANT. EMBRYO --- DEVELOPS INTO
SEEDLING.
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TYPES OF SEEDS MONOCOTDICOT SEEDS WITH ONLY ONE COTYLEDON EX-
PADDY, WHEAT, MAIZE ETC,. SEEDS WITH TWO COTYLEDONS. EX-BENGAL
GRAM, GREEN GRAM, GROUNDNUT ETC,.
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PLUMULE DEVELOPS INTO SHOOT SYSTEM. RADICAL DEVELOPS INTO ROOT
SYSTEM. GERMINATION OF SEED
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STAGES OF GERMINATION
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CONDITIONS REQUIRED FOR GERMINATION OF SEED SUFFICIENT WATER
SUNLIGHT (WARMTH) AIR
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NAME THE FOLLOWING 1.Protects the seed --------------. 2.Baby
plant is called -----------. 3.Supplies food for the embryo
-------------. 4.Seeds with one cotyledon is called -------------.
5.Seeds with two cotyledons is called ------------ ----------.
seedcoat embryo cotyledons Dicot seed Monocot seeds
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ARRANGE IN PROPER SEQUENCE ABCDE 1.------- 2.--------
3.-------- 4.--------- 5. --------- D C A E B
