Tuesday, April 12, 2016

Structure of seed

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.

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