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UPSC Prelims 2021 Paper-1 📅 10 Oct, 2021

Consider the following animals:
1. Hedgehog
2. Marmot
3. Pangolin

To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/protect its/their vulnerable parts?

A
1 and 2
B
2 only
C
3 only
D
1 and 3
Result Summary
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UPSC Prelims
2021 • 10 Oct, 2021 • Paper-1
Consider the following animals:
1. Hedgehog
2. Marmot
3. Pangolin

To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/protect its/their vulnerable parts?
Correct Answer
1 and 3
Defensive Mechanism of Hedgehogs: When threatened, hedgehogs rely on a specialized muscle to curl their bodies into a tight spherical shape, outwardly exposing ......
Ref/Book : UPSC Prelims 2021
Ref. Subject Environment
Chapter -
Ref. Topic Biodiversity
Pg. No -
💡 Analysis & Explanation
Defensive Mechanism of Hedgehogs ▼
When threatened, hedgehogs rely on a specialized muscle to curl their bodies into a tight spherical shape, outwardly exposing their sharp spines to deter predators. Thus, item 1 is correct.
Defensive Mechanism of Pangolins ▼
Pangolins possess thick, overlapping keratin scales. Upon sensing danger, they immediately roll themselves into an impenetrable ball, shielding their soft underbellies. Thus, item 3 is correct.
Marmot Behavior ▼
Marmots are large, terrestrial squirrels. Their primary anti-predator strategy involves emitting loud alarm calls and rapidly retreating into complex underground burrow systems, not rolling up. Thus, item 2 is incorrect.
Conclusion ▼
Both hedgehogs and pangolins utilize rolling as a primary defense tactic.
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