Question

Which of the following is true about double fertilisation?

• A. Fusion of two male gametes with one egg.
• B. Fusion of one male gamete with two polar nuclei
• C. Fusion of two male gametes of a pollen tube with two different eggs.
• D. Syngamy and triple fusion.

Answer 1

The correct option is D

Syngamy and triple fusion.

The correct option is D.

Explanation of correct option:

1. The process of fusion of one male gamete with the egg and the union of the second male gamete with the two polar nuclei or the secondary nucleus is called double fertilisation.
2. Out of the two male gametes, one fuses with the egg to carry out generative fertilisation or syngamy..
3. The process of fertilization of two polar nuclei with another male gamete from the pollen grain is called triple fusion.
4. It forms the endosperm.

Final answer: Syngamy and triple fusion are true about double fertilisation.