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A mature angiosperm embryo sac is typically:

A5-celled and 5-nucleate
B8-celled and 8-nucleate
C6-celled and 7-nucleate
D7-celled and 8-nucleate
Answer & Solution
Correct answer: D. 7-celled and 8-nucleate
After 3 mitotic divisions of the functional megaspore → 8 nuclei. Cell-wall formation gives **6 single-nucleated cells (2 synergids + 1 egg + 3 antipodals) + 1 central cell with 2 polar nuclei** = **7-celled, 8-nucleate**.
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