What are the stages of complete metamorphosis in insect development?

The stages of complete metamorphosis in insect development involve a four-phase process: egg, larva, pupa, and adult. The life cycle begins with the egg, which is the initial stage where the insect is laid by the adult. After hatching, the larval stage follows, which is often characterized by rapid growth and feeding; this stage is frequently different in form and function from the adult.

Once the larva has completed its growth, it enters the pupa stage, a transformative period where the insect undergoes significant internal changes. During this stage, the larva is usually immobile and encased in a protective covering, allowing it to reorganize its body to become an adult.

Finally, the adult stage emerges, marking the reproductive phase of the life cycle. This fully developed insect will display characteristics distinct from both the larval and pupal stages, such as wings in many species, enabling it to reproduce and continue the life cycle.

The other options do not accurately represent the complete metamorphosis process. For example, one suggests stages of development that include nymph, which refers to an incomplete metamorphosis typical of other insect groups, while another sequence does not follow the recognized developmental framework of egg, larva, p