A diploid female plant and a tetraploid male plant are crossed. The ploidy of endosperm shall be

Tetraploid

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Triploid

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Diploid

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Pentaploid.

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Solution

The correct option is A Tetraploid
A diploid female plant and a tetraploid male plant are crossed. The ploidy of endosperm shall be tetraploid. Diploid female plant will have 2 polar nuclei (each haploid) with which one male gamete from tetraploid male plant (male gamete of tetraploid plant will be diploid) fuses, making endosperm, so endosperm will be tetraploid.

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