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  4. In grasses what happens in microspore mother cell for the formation of mature pollen grains?

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Q. In grasses what happens in microspore mother cell for the formation of mature pollen grains?

AIPMTAIPMT 2001Sexual Reproduction in Flowering Plants

Solution:

Grass is a monocot plant. Primary sporogenous cell gives rise to microspore mother cells or pollen mother cells. Each MMC on reduction division gives rise to 4 microspores or pollens and this formation of microspores or pollens is called microsporogenesis. Karyokinesis is of successive type. The successive type of cytokinesis is common in monocots. Here both meiotic I and II nuclear divisions are followed by wall formation and it leads to isobilateral tetrad.