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In an embryosac the total number of cells that degenerate after fertilsiation is five.

Number of cells in embryosac involved in fertilisation are two

Number of nuclei involved in double fertilisation is five

the number of male gametes in the male gametophyte of angiosperms is one.

answer is D.

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Detailed Solution

The number of male gametes in the male gametophyte of angiosperms is two which are formed from generative cell either before or after pollination. In embryosac the cells that degenerate after fertilisation are two synergids and three antipodals i.e. total of five. The number of cells of embryosac involved in fertilisation is two i.e. egg cell and central cell. the number of nuclei involved in double fertilisation is two male gametes nuclei, two polar nuclei and one egg nucleus.

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