What is the extension of Indo-Burma hot spot harbouring endemic species?

Explanation

**Step-by-Step Solution:**

1. **Understanding Biodiversity Hotspots:**
- Biodiversity hotspots are regions that are rich in endemic species, which are species that are not found anywhere else in the world.
- For a region to qualify as a biodiversity hotspot, it must have at least 1,500 species of vascular plants as endemics and must be threatened by human activities.

2. **Identifying the Indo-Burma Hotspot:**
- The Indo-Burma hotspot is one of the recognized biodiversity hotspots in India and is known for its rich diversity of flora and fauna.
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