Question

mention two changes that a flower undergoes after fertilization

Answer 1

After fertilization, the following changes are observed in a flower: There is formation of a diploid zygote and it develops into an embryo, which forms the future plant. The endosperm cells serve as a source of nutrition for the developing embryo. The ovule becomes the seed.

Answer 2

Fertilization is defined as fusion of two gametes to form zygote.

After fertilization in plants following changes occurs :-
1. Sepals,petals and stamen wither off.
2.Style and stigma degenerate.
3. Ovary develops into fruit and ovule develops into Seed.