The transition zone between two communities is called

Options

A. Ecocline
B. Ecotone
C. Buffer zone
D. Thermocline

Answer

To answer the question "The transition zone between two communities is called," we will analyze the options provided and identify the correct term.

### Step-by-Step Solution:

1. **Understanding the Options**:
- We have four options:
- A) Echocline
- B) Ecotone
- C) Buffer Zone
- D) Thermocline

2. **Defining Echocline**:
- An echocline refers to a gradation from one ecosystem to another, also known as an ecological gradient. However, it does not specifically refer to the transition zone between two communities.

3. **Defining Ecotone**:
- An ecotone is specifically defined as the transition zone between two different ecological communities. This is the area where two ecosystems meet and integrate, making it the most relevant term for our question.

4. **Defining Buffer Zone**:
- A buffer zone is a neutral area that lies between two or more bodies of land. It is not specifically a transition zone between two communities.

5. **Defining Thermocline**:
- A thermocline is a layer in a body of water where the temperature changes rapidly with depth, specifically between warmer mixed water at the surface and cooler deep water. This term is related to aquatic environments but does not refer to the transition between terrestrial communities.

6. **Conclusion**:
- After analyzing all the options, we conclude that the correct answer to the question is **B) Ecotone**, as it is the term that specifically describes the transition zone between two communities.

### Final Answer:
The transition zone between two communities is called **Ecotone**.

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