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  4. In an angiosperm, how many microspore mother cells are required to produce 100 pollen grains?

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Q. In an angiosperm, how many microspore mother cells are required to produce 100 pollen grains?

AIPMTAIPMT 1995Sexual Reproduction in Flowering Plants

Solution:

Pollen grains or microspores are formed inside anther, which is the fertile portion of stamen or microsporophyll. The formation of microspores or pollens is called microsporogenesis. The primary sporogenous cell gives rise to microspore mother cells or pollen mother cells. Each microspore mother cell on reduction division gives rise to 4 microspores or pollens. So for the formation of 100 pollen grains, 25 MMC are required. It inolves karyokinesis followed by cytokinesis.