Question:
Fusion of the male gamete with what in the embryo sac of angiosperm forms the primary endosperm nucleus
Answer:
Hi there!
The second male gamete fuses with the 2 haploid polar nuclei to form triploid Primary endosperm nucleus.
Sometimes, before, the male gamete fuses with polar nuclei, the polar nuclei themselves fuse to form the secondary nucleus (2n). In that case, the second male gamete fuses with diploid secondary nucleus to form triploid Primary endosperm nucleus.
Thanks.
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