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In *monosporic development* of the female gametophyte:
ATwo megaspores fuse to form the embryo sac
BAll four megaspores form the embryo sac
COnly one megaspore (typically chalazal) becomes functional and forms the embryo sac; the other three degenerate
DThe MMC directly forms the embryo sac without meiosis
Answer & Solution
Correct answer: C. Only one megaspore (typically chalazal) becomes functional and forms the embryo sac; the other three degenerate
**Monosporic development**: only **one** of the four megaspores survives and undergoes 3 free-nuclear mitotic divisions → 8-nucleate embryo sac. The other three megaspores degenerate.
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