To form four fully developed polygonum type of embryosacs in angiosperms, total number of meiosis and mitosis divisions generations required are respectively

4, 12

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1, 3

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4, 4

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1, 12

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Solution

The correct option is A 4, 12
In angiosperms, for the formation of one embryosac, 1 meiosis takes place in the megaspore mother cell. And subsequently 3 mitotic divisions occur for the development of the 7 celled 8 nucleated structure. So, to form four fully developed polygonum type of embryosac in angiosperm the total number of meiosis and mitosis division generation required are 1x4=4 and 3x4=12 respectively.

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