Number of meiosis for formation of 80 zygotes in the angiosperms will be
40
90
160
100
A
40
B
90
C
100
D
160
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Solution
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80 zygotes requires 80 pollen grains and 80 embryo sacs. 80 pollen grains are formed from 20 microspore mother cells while 80 embryo sacs are formed from 80 functional megaspores which in turn are produced by 80 megaspore mother cells since three out of four megaspores degenerate in each case.
So, the answer is B.
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