At the time of seed germination , when water is absorbed by the seeds due to imbibition , the seet coat breaks as it swells to a lesser degree than the kernel because

Options

A. the kernal is made up of proteins, lipids and starch while the seed coat is formed of cellulose .
B. the kernel is made up of cellulose while the seed coat is made up of proteins, lipids and starch .
C. both kernel and seed coat are made up of same constituetns , it depends on the nature of medium .
D. none of the above .

Answer

A

Explanation

Seed coats ar made up of cellulose. And the cellulose has comparatively little imbibitional capacity , so little water is absorbed and sedd coats break . The most important of the plant imbibant are protein, pectin compounds , starch and cellulose, which can imbibe large amount of water . Some of the proteins can imbibe upto 15 times their own volume .