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Assertion: Po...

Question

Assertion: Pollen grains are well preserved as fossils.
Reason: The outer layer of pollen grains called the exine is made up of sporopollenin.

A

Both assertion and reason are true and reason is the correct explanation of assertion.

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B

Both assertion and reason are true but reason is not the correct explanation of assertion.

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C

The assertion is true but reason is false.

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D

Both assertion and reason are false.

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Solution

The correct option is A Both assertion and reason are true and reason is the correct explanation of assertion.
Pollen grains are well preserved as fossils because their outer wall exine is made up of a highly resistant organic material called sporopollenin.
Sporopollenin is able to withstand high temperatures and strong acids and alkali. It cannot be degraded by any enzyme known so far.
Therefore, both assertion and reason are true and reason is the correct explanation of assertion.

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