Question

Mention any two changes that a flower undergoes after fertilization

Answer 1

After fertilization out of the two sperm nuclei,one sperm nucleus fuses with the egg nucleus to form an embryo(process is called syngamy)and another fuses with the polar nucleus to form an endosperm (process is called triple fusion)These two changes are observed after fertilization.
Hope it will help you

Answer 2

The two changes are
* all the parts of the flowers fall off.
* and, ovule became seed and the place where
was flower now we get a fruit