Two zoogeographical regions separated by high mountain ranges are

Options

A. Oriental and Australian
B. Palaearctic and Oriental
C. Nearctic and Palaearctic
D. Neotropical and Ethiopian

Answer

To solve the question regarding which two zoogeographical regions are separated by high mountain ranges, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Regions**: The question lists four pairs of zoogeographical regions:
- A) Oriental and Australian
- B) Palaearctic and Oriental
- C) Nearctic and Palaearctic
- D) Neotropical and Ethiopian

2. **Understand the Geography**: We need to consider the geographical features that separate these regions. High mountain ranges are significant geographical barriers.

3. **Analyze Each Pair**:
- **Oriental and Australian**: These regions are separated by the Indian Ocean, not by high mountain ranges.
- **Palaearctic and Oriental**: The Palaearctic region is separated from the Oriental region by the Himalayas, which are indeed high mountain ranges.
- **Nearctic and Palaearctic**: These regions are primarily separated by the Arctic Ocean and land barriers, but not specifically high mountain ranges.
- **Neotropical and Ethiopian**: These regions are separated by the Atlantic Ocean, not by mountain ranges.

4. **Conclusion**: Based on the analysis, the Palaearctic and Oriental regions are the only pair that is separated by high mountain ranges (the Himalayas).

5. **Final Answer**: The correct answer is **B) Palaearctic and Oriental**.