A) fusion between a male gamete and two polar nuclei.
B) fusion between a male gamete and a polar nuclei.
C) fusion between egg and male gamete.
D) germination of megaspore.
Correct Answer: D
Solution :
[d] In gymnosperms, the endosperm is formed in the ovule during germination of the megaspore, it consequently becomes the female prothallus (gametophyte), with a haploid set of chromosomes. The archegonia in gymnosperms develop from certain cells of endosperm.
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