Correct Option: B. Grasshopper Explanation of the Correct Answer Incomplete Metamorphosis is a type of development that some insects undergo, characterized by three main stages: egg, nymph, and adult. In this process, the nymphs resemble smaller versions of the adult insects and gradually develop into adults through a series of molts.

1. Stages of Incomplete Metamorphosis:
2. Egg: The life cycle begins when the female insect lays eggs.
3. Nymph: After hatching, the young insect is called a nymph. Nymphs typically look like miniature adults but lack fully developed wings and reproductive organs. They undergo several molts (instars) as they grow, shedding their exoskeleton to accommodate their increasing size.
4. Adult: After several molts, the nymph reaches maturity and becomes an adult, which is capable of reproduction.

Grasshoppers are a prime example of insects that undergo incomplete metamorphosis. They start as eggs, hatch into nymphs, and eventually develop into adult grasshoppers. Why Other Options Are Incorrect

• A. Butterfly: Butterflies undergo complete metamorphosis, which consists of four distinct stages: egg, larva (caterpillar), pupa (chrysalis), and adult. The larval stage looks entirely different from the adult stage, which is a key characteristic of complete metamorphosis.
• C. Mosquito: Mosquitoes also undergo complete metamorphosis. Their life cycle includes four stages: egg, larva (wriggler), pupa (tumbler), and adult. The larval stage is aquatic and significantly different from the adult mosquito.
• D. Housefly: Like mosquitoes and butterflies, houseflies undergo complete metamorphosis. Their life cycle includes the egg, larval (maggot), pupal, and adult stages. The transformation from larva to adult is marked by significant changes in form and function.

Summary of Key Points

• Incomplete Metamorphosis involves three stages: egg, nymph, and adult, with nymphs resembling smaller adults.
• Grasshoppers are a classic example of insects that undergo incomplete metamorphosis.
• Complete Metamorphosis involves four stages and is seen in butterflies, mosquitoes, and houseflies, where the larval stage is distinctly different from the adult.

Revision Summary

• Incomplete metamorphosis has three stages: egg, nymph, adult.
• Grasshoppers exemplify incomplete metamorphosis.
• Complete metamorphosis includes four stages: egg, larva, pupa, adult.
• Butterflies, mosquitoes, and houseflies undergo complete metamorphosis.