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🌱 Environment & EcologyUPSC 2011Sustainable Development

The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?

aIt has high rainfall that supports luxuriant vegetative growth
bIt is a confluence of different biogeographical zones
cExotic and invasive species have not been introduced in this region
dIt has less human interference
✓ Correct answer: b) It is a confluence of different biogeographical zones
ExplanationBeing a confluence of different biogeographical zones Himalayan Range is very rich in species diversity. ​The Himalayas act as a natural transition zone between several major bio- geographical regions, leading to high species diversity and endemism. ​There are ten biogeographic zones in India:1. Trans-Himalayan zone.2. Himalayan zone3. Desert zone.4. Semi Arid zone.5. Western ghat zone.6. Deccan plateau zone.7. Gangetic plain zone.8. North east zone.9. Coastal zone10. Islands 42

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