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Question

An angiospermic plant has to produce 88 viable embryo sacs. How many meiotic divisions will be needed to produce equal number of female gametophytes by this plant?

A
88
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B
22
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C
44
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D
132
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Solution

The correct option is B 88
Ovule contains the female gametophyte or the embryo sac. Each ovule usually contains only one embryo sac
Each embryo sac is formed by meiotic division of the diploid mother cell
The end result of a meiotic division is 4 haploid cells, in most cases, of the 4 haploid cells formed, three degenerate and one develops into the embryo sac
Therefore, to produce 88 viable embryo sacs 88 meiotic divisions are required
So, the correct answer is '88'

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