How many haploid nuclei are present in a mature pollen grain?

One

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Two

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Three

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Four

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Solution

The correct option is B Two
In flowering plants, double fertilization occurs. It involves two fusions during fertilization of an ovule. A pollen grain contains two male gametes. One of the male gametes fuses with the female gamete to form a zygote and the other one fuses with the polar nuclei to form the primary endosperm nucleus.

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