Metamorphosis is a process that involve extreme physical change some time after birth. The animals grows new cells rapidly. The animals ways of doing things might change in the process like it breathing pattern (tadpole to frog). The eyes or the body structure might change entirely. Metamorphosis may be complete or incomplete metamorphosis.
Moths is one organism that undergoes complete metamorphosis. In complete metamorphosis like the case of moth , the larva changes completely to form the adult. The transformation is so fast and complete. The larva changes completely to an entirely different structure for the larva.