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  • Help me answer: Which of the following has proved helpful in preserving pollen as fossils ?

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

  • Option 1)

    Oil content

  • Option 2)

    Cellulosic intine

  • Option 3)

    Pollenkitt

  • Option 4)

    Sporopollenin

 

Answers (3)

best_answer

As we learnt in 

Structure of pollen grains -

The hard outer layer called the exine is made up of sporopollenin which is one of the most organic material known. It can withstand high temperatures and strong acids and alkali. No enzyme that degrades sporopollenin is so far known. Pollen grains exine has prominent apertures called germ pores where sporopollenin is absent.

- wherein

Pollen grains are well preserved as fossils because of the presence of sporopollenin.

 

 Sporopollenin cannot be degraded by enzyme; strong acids and alkali, therefore it is helpful in preserving pollen as fossil.

Pollenkitt – Help in insect pollination.

Cellulosic Intine – Inner sporoderm layer of pollen grain known as intine made up cellulose & pectin.

Oil content – No role is pollen preservation.

 


Option 1)

Oil content

This is incorrect.

Option 2)

Cellulosic intine

This is incorrect.

Option 3)

Pollenkitt

This is incorrect.

Option 4)

Sporopollenin

This is correct.

Posted by

divya.saini

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Sporopollenin

Posted by

Arvind

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