Question

Fusion of a male gamete with egg in embryo sac is

• A. Autogamy
• B. Syngamy
• C. Double fertlisation
• D. Triple fusion

Answer 1

Answer: (B)

Syngamy

Fusion of a male gamete with egg in embryo sac is called as syngamy.

Autogamy is the pollination of the ovules of a flower by its own pollen. It is also known as self-fertilization.

Double fertilisation is a complex fertilisation mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called as the embryo sac) with two male gametes (sperm).

The pollen tube releases the two sperm into the embryo sac, where one fuses with the egg and forms a zygote and the other fuses with the two polar nuclei of the central cell and forms a triple fusion.

Thus, the correct answer is option B.