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Pollen Germination

Most resistan...

Question

Most resistant biological material is
Or
An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

A

Ligin

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B

Cellulose

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C

Suberin

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D

Sporopolenin

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Solution

The correct option is D Sporopolenin
Sporopollenin is fatty substance present in pollen wall and provides resistance against extremes conditions like high temperature, Acid, bases.

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Q. Go through the following statements regarding a substance which enable pollen grain to tolerate in extremely adverse condition and choose correct option.
I. It form the exine of pollen grain.
II. It is one of the resistant organic material.
III.It contain a aperture called germ pore where it is present.
IV. It can withstand high temperatures and strong acids.
V. Still new no enzyme has been discovered which can degrade it.

Q. Which of the following compound is not degraded by any biological process?

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