What are advantages of incomplete metamorphosis?

Answer 1

Complete metamorphosis is an evolutionary advantage to insects. This allows growing of body size to occur in distinct stages so it is more efficient.

Answer 2

A complete metamorphosis gives holometabolous insects a notable survival advantage. Since the adults and larvae don't share food sources, there is no competition.

Answer 3

Insects that undergo this have the pupa stage which lengthens the probability of survival during a young stage rather than being eaten.

Answer 4

The larva eats something completely different from the adult, so there's less competition, and they can live in various habitats.