Q37 / 199 · NEET 2008 (Mains) · Botany

Which one of the following is resistant to enzyme action?

A
Leaf cuticle
B
Cork
C
Wood fibre
Correct answer
D
Pollen exine

Solution

Pollen exine : It is formed of sporopollenin which is resistant to microbial, physical and chemical decomposition. Due to presence of sporopollenin, pollens can be preserved for longer period of time in fossil form. Sporopollenin is formed after the oxidative polymerisation of carotenoids.

Hence, the correct answer is option: 'D'.

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