Muodonmenetys

Muodonmenetys, also known as metamorphosis, is a biological process by which an animal physically develops after birth or hatching, involving a profound transformation from its larval form to an adult form. This process is characteristic of insects, amphibians, and some other invertebrates. Metamorphosis can be complete or incomplete.

In complete metamorphosis, the animal undergoes four distinct stages: egg, larva, pupa, and adult. The larva, often called a caterpillar or grub, is a juvenile form that feeds and grows. The pupa, or chrysalis, is a resting stage where the animal undergoes significant internal changes, including the formation of adult structures. The adult emerges from the pupa fully formed and capable of reproduction.

In incomplete metamorphosis, the animal undergoes three stages: egg, nymph, and adult. The nymph is a juvenile form that resembles the adult but is smaller and often lacks adult features. The nymph sheds its skin multiple times, growing larger and more adult-like with each molt until it reaches the adult stage.

Metamorphosis is a critical aspect of the life cycle of many organisms, allowing for the adaptation of different life stages to different environments and resources. It is a fascinating process that showcases the remarkable diversity and complexity of life on Earth.