Periodic peparture and return of an indidual in a population is known as

Options

A. immigration
B. migration
C. emigration
D. mutation

Answer

**Step-by-Step Solution:**

1. **Understanding the Terms:**
- The question asks about the periodic departure and return of an individual in a population. We need to identify the correct biological term for this behavior.

2. **Identifying the Options:**
- The options provided are:
- A) Immigration
- B) Migration
- C) Emigration
- D) Mutation

3. **Defining Each Term:**
- **Immigration:** This refers to individuals moving into a new habitat or area from another location.
- **Migration:** This is the periodic movement of individuals from one region to another and back again, often for breeding or seasonal purposes.
- **Emigration:** This is the process of individuals leaving their current habitat to settle in another.
- **Mutation:** This refers to genetic changes in an organism, which is not related to movement or migration.

4. **Analyzing the Context:**
- The example of seasonal birds (migratory birds) is given, which migrate to different regions during specific seasons (e.g., winter) to lay eggs and return after the season ends.

5. **Conclusion:**
- Based on the definitions and the context provided, the correct answer to the question is **B) Migration**. This term specifically refers to the periodic departure and return of individuals, as seen in migratory birds.

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