How many pollen grains and embryo sacs will be formed in a typical plant if a flower has 100 microspore mother cells in the anther and 100 nucellar cells in the ovule?
Text Solution
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From Microspore Mother Cells (MMCs):
Each microspore mother cell (2n) undergoes meiosis → produces a tetrad of 4 haploid microspores. Each microspore develops into a pollen grain.
So, 1 MMC 
pollen grains.
100 MMCs in the anther 
pollen grains.
From Nucellar Cells (MMC in ovule):
Each ovule has one megaspore mother cell (MMC) that is differentiated from one of the nucellar cells.
MMC undergoes meiosis → produces 4 megaspores → only 1 functional megaspore survives → develops into 1 embryo sac.
So, 1 nucellar cell 
embryo sac.
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