Direct development

Indirect development

It is a type of development in which an embryo develops into a mature individual without involving a larval stage.

It is a type of development that involvesa sexually- immature larval stage,

having different food requirements than adults.

Metamorphosis is absent.

Metamorphosis involving development of larva to a sexually- mature adult is

present.

It occurs in fishes, reptiles, birds, and

mammals.

It occurs in most of the invertebrates and amphibians.