Metamorphosis is a biological process of transforming a larva into an adult. This involves relatively sudden and abrupt changes in the animal's structure. Frogs and insects are examples of organisms showing metamorphosis. The life cycle of a frog has three
distinct stages:
EGG ? TADPOLE ? ADULT
The tadpole emerging from the egg will have gills, tail, etc.
They can swim easily in water.
It undergoes abrupt changes and develops into a mature frog.