Explain two major advantages of ex‑situ conservation over in‑situ conservation, providing a relevant example for each advantage.
Answer
Ex‑situ conservation allows safe breeding of endangered species away from threats (e.g., captive breeding of the Indian rhinoceros) and facilitates preservation of genetic material for future use (e.g., seed banks for rare Himalayan herbs).
Step-by-step solution
- State the definition of ex‑situ conservation: conservation of components of biodiversity outside their natural habitats.
- First advantage – protection from immediate threats: In a controlled facility, species are shielded from poaching, habitat loss, or disease. Example: Captive breeding programmes for the Indian rhinoceros in Kaziranga’s breeding centre.
- Second advantage – preservation of genetic material: Ex‑situ methods such as seed banks, gene banks, and tissue culture store genetic diversity that can be re‑introduced later. Example: The National Gene Bank in New Delhi preserving seeds of rare Himalayan medicinal plants.
- Contrast briefly with in‑situ conservation, which relies on protecting species within their natural ecosystems, highlighting why the above advantages are unique to ex‑situ approaches.
- Conclude by summarising the two advantages with the provided examples.
Common mistake: Mentioning only one advantage or mixing up advantages of in‑situ conservation.
Concept tested: ex‑situ vs in‑situ conservation
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