Q. In an embryo sac, the cells that degenerate after fertilisation are

 3790  216 Sexual Reproduction in Flowering Plants Report Error

Solution:

Synergids and antipodals are the cells that are present in the embryo sac at the time of fertilization. Once the fertilization of the male gamete and the egg occurs and the zygote is formed. The synergids and antipodal cells degenerate after that and the ovary converts into a fruit.
So, the correct option is 'Synergids and antipodals'