Question

Double fertilization is the fusion of the male gamete with the ______.

Options

• egg cell

• antipodals

• two polar nuclei or their fusion product

• egg cell and another male gamete with two polar nuclei

Answer 1

Double fertilization is the fusion of the male gamete with the egg cell and another male gamete with two polar nuclei.

Explanation:

Double fertilization is a process unique to angiosperms, where one male gamete fuses with the egg cell, forming the diploid zygote, and the other male gamete fuses with the two polar nuclei (or their fusion product), forming the triploid primary endosperm nucleus. This process involves the fusion of one male gamete with the egg and the other male gamete with the polar nuclei, hence the term double fertilization.