Periodic departure and return is known as -

Options

A. Migration
B. Immigration
C. Emigration
D. Mutation

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the term that describes a process involving periodic departure and return.

2. **Analyzing the Options**: The options provided are:
- Migration
- Emigration
- Amigration
- Mutation

3. **Defining Each Term**:
- **Migration**: This is the process where animals or birds move from one habitat to another and then return, often due to seasonal changes or environmental factors.
- **Emigration**: This refers to leaving one region to settle in another permanently.
- **Amigration**: This term is not commonly used in biological contexts.
- **Mutation**: This refers to a change in the DNA sequence of an organism, which is unrelated to movement.

4. **Identifying the Correct Term**: Based on the definitions, migration is specifically characterized by the periodic movement away from and back to a habitat, which aligns with the description of "periodic departure and return."

5. **Conclusion**: Therefore, the correct answer to the question is **Migration**.

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