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Question

Which one of the following statements is correct regarding pollen?


A

Tapetum nourishes the developing pollen

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B

Endothecium produces the microspores

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C

Sporogenous tissue is haploid

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D

Hard outer layer of pollen is called intine

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Solution

The correct option is A

Tapetum nourishes the developing pollen


The correct option is A.

Explanation for correct option:

  1. The male gametophyte is represented by pollen grains.
  2. The pollen grain divides into two cells during mitosis: a vegetative cell and a generative cell.
  3. The tapetum is the innermost layer of the wall.
  4. Tapetum feeds pollen grains as they grow. The outer three wall layers serve as a defense and aid in the release of pollen in another dehiscence.

Explanation for incorrect options:

Option B:

Endothecium forms a protective wall around the microsporangium and aids in pollen release during another dehiscence.

Option C:

The sporogenous tissue is diploid. It goes through meiotic splitting to form microspore tetrads.

Option D:

The inner wall of the pollen grain is known as intine. While intine is the thin and continuous inner wall made of cellulose and pectin.

Final Answer: The correct statement about pollen is “Tapetum nourishes the developing pollen”.


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