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Q.

The pollen grain viability is highly variable. Select the least viable pollen grain from the following list of choices.

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a

Rose

b

Potato 

c

Peas

d

Rice

answer is D.

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Detailed Solution

In some cereals such as rice and wheat, pollen grains lose viability within 30 minutes of their release, and in some members of Rosaceae, Leguminoseae and Solanaceae, they maintain viability for months.

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