A) a single haploid nucleus
B) one diploid and one haploid nuclei
C) two haploid polar nuclei
D) one diploid secondary nucleus
E) two diploid polar nuclei
Correct Answer: C
Solution :
In angiosperms the functional megaspore undergoes mitotic division and form 8 haploid nuclei. Out of which 3 micropyler cell (nuclei with cell wall) form egg apparatus, 3 chalazal form antipodal cells and the two central nuclei (polar nuclei) form central cell. These two polar nuclei fuse just before their fertilization by second male gamete to form primary endosperm nucleus, which is triploid.
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