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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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