Which one of the following statements is not true?

  • Option 1)

    Tapetum helps in the dehiscence of anther

  • Option 2)

    Exine of pollen grains is made up of sporopollenin

  • Option 3)

    Pollen grains of many species cause severe allergies

  • Option 4)

    Stored pollen in liquid nitrogen can be used in the crop breeding programmes

 

Answers (1)

 

Function of wall layers in a typical microsporangium -

The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen. The innermost wall layer is the tapetum. It nourishes the developing pollen grains. Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.

-

 

 Tapetum provides nourishment to the developing pollen grains


Option 1)

Tapetum helps in the dehiscence of anther

This is correct oprion

Option 2)

Exine of pollen grains is made up of sporopollenin

This is incorrect option

Option 3)

Pollen grains of many species cause severe allergies

This is incorrect option

Option 4)

Stored pollen in liquid nitrogen can be used in the crop breeding programmes

This is incorrect option

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