Question

How many nuclei take part in double fertilisation of flowering plants?

• A. 3
• B. 2
• C. 5
• D. 8

Answer 1

The correct option is C 5

Double fertilisation is a characteristic feature of angiosperms. It is a fusion of two male gametes brought by a pollen tube to two different cells of the same female gametophyte to produce zygote and endosperm. One of the male gametes fuses with the egg to form diploid zygote. The other male gamete fuses with the central cell (containing two nuclei) to form triploid endosperm. Hence, a total of five nuclei take part in double fertilisation.