Gametophytes of sexually reproducing flowering plants are A) Haploid B

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Gametophytes of sexually reproducing flowering plants are
A) Haploid
B) Diploid
C) Tetraploid
D) Polyploid

Haploid
Diploid
Tetraploid
Polyploid
This question was previously asked in
UPSC NDA-1 – 2015
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In the life cycle of sexually reproducing flowering plants (angiosperms), the dominant generation is the sporophyte, which is diploid (2n). This sporophyte produces spores through meiosis. These spores develop into the gametophytes (male gametophyte or pollen grain, and female gametophyte or embryo sac). The gametophytes are haploid (n). They produce gametes (sperm and egg) through mitosis.
The gametophyte generation in plants is haploid, producing gametes by mitosis. The sporophyte generation is diploid, producing spores by meiosis.
In flowering plants, the gametophyte generation is significantly reduced and dependent on the sporophyte. The male gametophyte is the pollen grain, and the female gametophyte is the embryo sac within the ovule.

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