Which of the following animals does not show metamorphosis ?

Options

A. fish
B. frog
C. silk moth
D. mosquito

Answer

**Step-by-Step Solution:**

1. **Understand the Concept of Metamorphosis**: Metamorphosis is a biological process where an animal undergoes significant physical changes from its early developmental stages (like larva) to its adult form. This process is common in certain animals, particularly amphibians and insects.

2. **Identify the Options**: The animals listed in the question are fish, frog, silk moth, and mosquito. We need to determine which of these does not undergo metamorphosis.

3. **Analyze Each Option**:
- **Fish**: Fish do not undergo metamorphosis. They develop from eggs directly into juvenile fish without a larval stage.
- **Frog**: Frogs undergo metamorphosis. They start as eggs, hatch into tadpoles (larval stage), and then transform into adult frogs.
- **Silk Moth**: Silk moths also undergo metamorphosis. They go through stages including egg, larva (caterpillar), pupa (cocoon), and then emerge as adult moths.
- **Mosquito**: Mosquitoes undergo metamorphosis as well. They develop from eggs into larvae (wrigglers), then into pupae, and finally into adult mosquitoes.

4. **Conclusion**: Based on the analysis, the only animal from the options that does not show metamorphosis is the fish.

5. **Final Answer**: The correct answer is **fish**.

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