Answer:
Metamorphosis are the series of processes involved in the development of organisms, mostly insects after the egg is hatched.
Insects undergo complete or incomplete metamorphosis
Complete metamorphosis involves 4 stages which is the development from egg to larva to pups to adults in a step wise manner e.g butterfly, moth etc
Egg—> Larva—> Pupa—> Adults
In incomplete metamorphosis the stages are 3 and it involves development from egg to nymph to adults. E.g cockroach
Egg—> Nymph—> Adults