The presence of diversity at the junction of territories of two different habitats is known as

Options

A. Bottle neck effect
B. Edge effect
C. Junction effect
D. Pasteur effect

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the term that describes the presence of diversity at the junction of two different habitats.

2. **Identifying the Options**: The options provided are:
- A) Bottleneck effect
- B) Edge effect
- C) Junction effect
- D) Pasture effect

3. **Analyzing the Options**:
- **Bottleneck Effect**: This term refers to a sharp reduction in the size of a population due to environmental events or human activities, leading to a loss of genetic diversity. It is not related to habitat junctions.
- **Pasture Effect**: This term does not have a recognized ecological meaning related to habitat junctions.
- **Junction Effect**: While it sounds relevant, it is not a commonly used term in ecology.
- **Edge Effect**: This term describes the increased diversity and abundance of species that occurs at the boundary or edges of two different habitats.

4. **Conclusion**: Based on the analysis, the term that best describes the presence of diversity at the junction of two different habitats is the **Edge Effect**.

5. **Final Answer**: The correct option is **B) Edge effect**.