Hemimetabolous metamorphosis is found in

Options

A. Anopheles
B. Musca
C. Dragon flies
D. Butter flies.

Answer

### Step-by-Step Solution:

1. **Understanding Metamorphosis**: Metamorphosis refers to the developmental process that certain organisms undergo, which involves a series of changes in form and structure.

2. **Types of Metamorphosis**: There are two main types of metamorphosis in insects:
- **Hemimetabolous Metamorphosis**: Also known as incomplete metamorphosis, this type involves three stages: egg, nymph, and adult. There is no pupal stage in this process.
- **Holometabolous Metamorphosis**: Also known as complete metamorphosis, this type involves four stages: egg, larva, pupa, and adult.

3. **Identifying the Organisms**: The question asks which of the given options undergo hemimetabolous metamorphosis. The options provided are:
- Anopheles
- Musca (housefly)
- Dragonflies
- Butterflies

4. **Analyzing Each Option**:
- **Anopheles**: This is a genus of mosquitoes that undergoes complete metamorphosis (holometabolous).
- **Musca (housefly)**: This insect also undergoes complete metamorphosis (holometabolous).
- **Dragonflies**: These insects undergo hemimetabolous metamorphosis, which includes the stages of egg, nymph, and adult, without a pupal stage.
- **Butterflies**: These insects undergo complete metamorphosis (holometabolous).

5. **Conclusion**: Based on the analysis, the correct answer to the question "Hemimetabolous metamorphosis is found in" is **dragonflies**.