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Which one of the following statements is not true?

1. Tapetum helps in the dehiscence of anther
2. Exine of pollen grains is made up of sporopollenin
3. Pollen grains of many species cause severe allergies
4. Stored pollen in liquid nitrogen can be used in the crop breeding programmes

Correct answer: Tapetum helps in the dehiscence of anther

Solution

Tapetum is the nutritive layer that supports developing pollen grains, so it does not cause anther dehiscence. Dehiscence is mainly aided by the endothecium, while the other statements are true.

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