Insect metamorphosis is the process by which insects develop through distinct life stages. There are two main types: complete metamorphosis and incomplete metamorphosis. In complete metamorphosis, insects like butterflies undergo four stages: egg, larva (caterpillar), pupa (chrysalis), and adult. Each stage has unique characteristics and functions. In incomplete metamorphosis, insects such as grasshoppers develop through three stages: egg, nymph, and adult. The nymph resembles a smaller version of the adult but lacks wings and reproductive organs. As the nymph grows, it molts several times until it reaches maturity, completing its transformation into an adult insect.