Pollen Grains

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20 Questions

Which layer of the pollen grain is made up of sporopollenin, a highly resistant organic material?

The outer wall

What is the function of the germ pore in the pollen grain exine?

To facilitate germination

What is the composition of the inner wall of the pollen grain?

Cellulose and pectin

What is the size range of pollen grains?

25-50 micrometers

Why are pollen grains well-preserved as fossils?

Due to the presence of sporopollenin

True or false: Pollen grains are generally spherical in shape?

True

True or false: The exine of pollen grains is made up of sporopollenin?

True

True or false: Sporopollenin can withstand high temperatures and strong acids and alkali?

True

True or false: No enzyme that degrades sporopollenin is known?

True

True or false: The inner wall of the pollen grain is called the exine?

False

True or false: The exine of pollen grains is made up of sporopollenin?

True

True or false: The inner wall of the pollen grain is called the intine?

False

True or false: No enzyme that degrades sporopollenin is known?

True

True or false: Pollen grains are generally spherical in shape?

True

True or false: Sporopollenin can withstand high temperatures and strong acids and alkali?

True

Why is the exine of pollen grains hard?

The exine of pollen grains is hard to provide protection and prevent desiccation.

What is the function of the germ pore in the pollen grain exine?

The germ pore in the pollen grain exine allows for the release of the male gametes during pollination.

What is the composition of the inner wall of the pollen grain?

The inner wall of the pollen grain is made up of cellulose and pectin.

What is the size range of pollen grains?

Pollen grains generally measure about 25-50 micrometers in diameter.

What is the outer layer of the pollen grain called?

The outer layer of the pollen grain is called the exine.

Test your knowledge about pollen grains and their unique features with this quiz. Learn about the composition of the two-layered wall, the durability of the outer layer, and more.

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