Q.86 Small geographic areas with high concentrations of endemic species and a large number of
endangered and threatened species are known as
(A) endemic sinks (B) critical communities
(C) biodiversity hot spots (D) endemic metapopulations
Biodiversity conservation questions test understanding of critical ecological zones in exams like UPSC, GATE, and NEET. Biodiversity hotspots mcq Q.86 identifies regions with concentrated endemic and threatened species. The correct answer is option (C).
✅ Correct Answer: (C) Biodiversity Hotspots
Biodiversity hotspots are biogeographic regions featuring:
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≥1,500 endemic vascular plant species (>0.5% of world’s total)
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≥70% original habitat loss due to human activities
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High concentrations of endangered/threatened species
Examples: Western Ghats, Eastern Himalayas, Madagascar, Tropical Andes.
❌ Why Other Options Are Wrong
(A) Endemic Sinks – Incorrect
Endemic sinks don’t exist in ecology. “Sink” populations have negative growth (immigration > birth), but this term doesn’t describe geographic areas with high endemic diversity.
(B) Critical Communities – Incorrect
Critical communities is vague terminology. While some communities face threats, this isn’t a standard ecological term for high-endemicity regions with threatened species concentrations.
(D) Endemic Metapopulations – Incorrect
Metapopulations are spatially separated populations of the same species connected by dispersal. Endemic metapopulations could describe multiple endemic populations, but doesn’t refer to geographic areas rich in diverse endemic species.
Key Characteristics of Biodiversity Hotspots
| Feature | Requirement | Purpose |
|---|---|---|
| Plant Endemism | ≥1,500 vascular plants | Ensures unique biodiversity |
| Habitat Loss | ≥70% original vegetation | Indicates urgent conservation need |
| Threatened Species | High concentrations | Conservation priority |
| Geographic Scale | Relatively small areas | Focused protection efforts |
36 global hotspots cover 2.4% of Earth’s land but contain >50% plant species, >42% vertebrates.
Exam Strategy: Biodiversity Hotspots MCQ
Memorize these 4 Indian Hotspots:
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Western Ghats – 44% endemic plants
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Eastern Himalayas – Indo-Burma hotspot
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Indo-Burma – Northeast India
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Sundaland – Nicobar Islands
Quick ID Tips:
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✅ High endemics + habitat loss = Hotspots [C]
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❌ Population dynamics = Metapopulations [D]
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❌ Non-standard terms = A, B
Real-World Importance
Hotspots guide conservation investment – protecting them saves more species per dollar than other areas. Western Ghats alone hosts 7,402 flowering plants (62% endemic).
Master biodiversity hotspots mcq for your ecology section. The pattern is consistent across UPSC/GATE exams!
Perfect score answer: C – Biodiversity hotspots perfectly matches the description of small areas with high endemic + threatened species concentrations.
