Question

Double fertilization means ______.

Options

• the fusion of two male gametes with egg

• one male gamete with the egg and the other with secondary nucleus

• one male gamete with the egg and other with synergid

• all of the above

Answer 1

Double fertilization means one male gamete with the egg and the other with secondary nucleus.

Explanation:

Double fertilization is a unique process in angiosperms where one male gamete fuses with the egg to form a diploid zygote, and the other male gamete fuses with the two polar nuclei (secondary nucleus) to form a triploid primary endosperm nucleus, which nourishes the developing embryo.