Which one of the following statements is not true?

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Pollen grains of many species cause severe allergies.

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

Tapetum helps in the dehiscence of anther.

Exine of pollen grains is made up of sporopollenin

answer is C.

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Detailed Solution

The innermost wall layer is the tapetum. It nourishes the developing pollen grains.Endothecium is the single layered hypodermis of anther wall with hygroscopic thickenings of cellulose and is helpful for dehiscence of anther.In general, the outer three wall layers perform the function of protection and help in a dehiscence of anther to release the pollen.

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