Reproduction in Animals — Science STD 8 — Question

The term 'metamorphosis' is not used while describing human development because in human beings, body parts of an adult are present from the time of birth itself, i.e., while beginning of life as a baby and until you are an adult, the basic plan of body does not change. On the contary, in metamorphosis, the parts of the adult are diffrent from those at the time of birth.