Question

In angiosperms, one male gamete fuses with the definitive nucleus to form triploid primary endosperm nucleus. The process is called

• A. 100
• B. 40
• C. 80
• D. 50

Answer 1

The correct option is A

100

In angiosperms, the generative nucleus in the pollen tube divides to form male gametes. One of the two male gamete fuses with the egg to form a diploid zygote (2n). The other male gamete (n) fuses with the definitive nucleus (2n) to form triploid primary endosperm nucleus. The process is called triple fusion. These two acts together are known as double fertilization (as fertilisation takes place twice)