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One of the most resistant biological mat...

One of the most resistant biological material present in the exine of pollen grain is

A

pectocellulose

B

sporopollenin

C

suberin

D

cellulose

Text Solution

Verified by Experts

The correct Answer is:
B
Outer layer (exine) of pollen grain is made of a highly resistant substance called sporopollenin. Sporopollenin is not degraded by any enzyme. It is not affected by high temperature, strong acid or strong alkali. Because of sporopollenin, pollen grains are well preserved as fossils.
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  4. Which of the following statements about sporopollenin is incorrect ?

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  7. of the pollen grain divides to form two male gametes.

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