In a flowering plant, a tetraploid male plant is cross pollinated with a diploid female plant of the same angiospermic species. What would be the ploidy of the endosperm and embryo developed respectively?

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5n and 2n

4n and 3n

3n and 3n

3n and 2n

answer is B.

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Detailed Solution

The ploidy of a male plant is 4n. Therefore, gametes have the ploidy of 2n. The female plant is diploid. Hence, the egg is haploid. So triple fusion results in the production of endosperm with 4n and zygote with 3n.

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