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

Options

A. (a) the kernal is made up of proteins, lipids and starch while the seed coat is formed of cellulose
B. (b) the kernel is made up of cellulose while I made the seed coat up of proteins, lipids and starch
C. (c) both kernel and seed coat are made up of same constituents, it depends on the nature of medium
D. (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 .