Structure of seed
Children
have you seen a bean or a gram seed. It is hard and cannot be broken easily.
The hard outer covering layer is called the seed coat. The seed coat protects
the seed.
Seed
coat – Formed from embryo sack wall and endosperm tissue (During
development, the endosperm stops dividing and is absorbed into the
embryonic tissues.)
The
seed has two cotyledons. These are special seed leaves which protect baby plant
or embryo. They also store food for the embryo.
Seeds
like grams, beans and peas have two cotyledons while seeds like wheat and corn
have only one cotyledon.
THANK YOU,
d
ReplyDeleteIt is protective covering of the seed and is made up of two layers: (a) outer-called testa which is usually hard, and (b) inner-called tegmen which is thin and papery. ADVERTISEMENTS: There is a small opening at one end of the seed coat, called micropyle through which water enters the seed.
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