A) 8 nucleate and 7 celled
B) 16 nucleate and 13 celled
C) 8 nucleate and 8 celled
D) 4 nucleate and 4 celled
Correct Answer: D
Solution :
Oenothera type of embryo sac is derived from the micropylar megaspore of the tetrad and is 4 nucleate. The organisation of the mature embryo sac is-an egg apparatus and a uninucleate central cell. This type of embryo sac is characteristic of family-Onagraceae. It is a type of monosporic embryo sac.
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