Question

Triple fusion involves ______.

Options

• fusion of one male gamete with female gamete

• fusion of two nuclei with generative nucleus

• fusion of two polar nuclei

• fusion of second male gamete with two polar nuclei

Answer 1

Triple fusion involves fusion of second male gamete with two polar nuclei.

Explanation:

Triple fusion involves the fusion of the second male gamete with the two polar nuclei in the embryo sac, forming a triploid primary endosperm nucleus. This endosperm nourishes the developing embryo and is a unique feature of angiosperms called double fertilization, where one male gamete fertilizes the egg and the other fuses with the polar nuclei.