How many microspore mother cells would be required to produce 100 pollengrains in a pollen sac? why?

2. How many microsporangia are present in a typical anther of an angiosperm?

1..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.

2. . . . 4 microsporangia are present in a typical anther