قراءة لمدة 1 دقيقة Direct development

Direct development is an idea in biology.
An animal does direct development if the baby animal looks like a small adult and not a larva.
A frog that hatches out of its egg as a small frog has direct development.
A frog that hatches out of its egg as a tadpole does not.
An insect that hatches out of its egg as a small adult does direct development.
An insect that hatches out of its egg as a caterpillar or grub does not.

Direct development is the opposite of complete metamorphosis.
An animal does complete metamorphosis if it becomes a non-moving thing, for example a pupa in a cocoon, after being a larva but before being an adult.