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Male Gametophyte

Which of the ...

Question

Which of the following has proved helpful in preserving pollen as fossils ?

A

Oil content

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B

Pollenkitt

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C

Sporopollenin

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D

Cellulosic intine

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Solution

The correct option is B Sporopollenin
Sporopollenin is one of the most resistant biological materials, found in the exine of pollen grains. It is resistant to microbial and chemical decomposition and due to this, pollen grains are well preserved during fossilisation. So, the correct answer is option C.

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Q. [A]: Microspores or pollen grains are safely deposited in the fossils
[R]: Pollen grains have sporopollenin in their intine

Q. Identify the pair of wrong statements.
I. Intine of pollen grains is made up of sporopollenin.
II. Pollen grains are well preserved as fossils because of the presence of sporopollenin.
III. Enzymes can degrade the organic material of the pollen grain exine.
IV. Sporopollenin can withstand high temperature, strong acids and alkali.

Q. Identify the pair of wrong statements in the following.
I) Intine of pollen grain is made up of sporopollenin.
II) Pollen grains are well preserved as fossils because of the presence of sporopollenin.
III) Enzymes can degrade the organic material of the exine of pollen grain.
IV) Sporopollenin can withstand high temperatures, strong acids and alkali.

Q. Pollen grains are well preserved as fossils because of the presence of which of the following?

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

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