In angiosperms, each pollen grain produces two male cells. What do these sperms do in the fertilisation of a flower?

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Each one fertilises a separate egg cell to give rise to two seeds

One fertilises an egg cell and the other fertilises another cell that gives rise to the tissue of the fruit

Both fertilises a single egg cell

One fertilises an egg cell and the other fertilises the cell that forms endosperm

answer is D.

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Detailed Solution

One of the male gametes moves towards the egg cell and fuses with its nucleus thus completing the syngamy. This results in the formation of a diploid cell, the zygote. The other male gamete moves towards the two polar nuclei located in the central cell and fuses with them to produce a triploid primary endosperm nucleus.

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