Exine of pollen is
(A) hard outer layer of pollen grain.
(B) most resistant organic matter known.
(C) layer made up of sporopollenin.
(D) layer which can withstand high temperature, strong acids and alkali.
(E) layer which cannot be degraded by any enzyme.
Which of the following is correct?

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A and B

A,B,C and D

A,B,C,D and E

A,C and E

answer is C.

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Detailed Solution

The hard outer layer called the exine is made up of sporopollenin which is one of the most resistant organic material known. It can withstand high temperatures and strong acids and alkali. No enzyme that degrades sporopollenin is so far known.

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