With respect to the Western Hoolock Gibbons, which of the following statements is/are correct? 1. A Sanctuary in North-east India is home to this ape species listed as Endangered in the International Union for Conservation of Nature (IUCN) Red List. 2. They have specialized brachiation and can easily swing between trees. 3. They possess a strong and heavy build like gorillas, yet are remarkably agile tree climbers. Select the answer using the code given below :
- A.1 only
- B.1 and 2
- C.2 and 3
- D.3 only
Correct answer
Explanation
The correct answer is B, 1 and 2. The Western Hoolock Gibbon is an Endangered ape protected in a sanctuary in Assam, and it moves by swinging from branch to branch, but it is a light, slender animal, not heavily built like a gorilla.
Hoolock gibbons are the only apes found in India, living in the forests of the north-east. The Hollongapar Gibbon Sanctuary in Jorhat district of Assam is named after them and is one of their best-known homes. Gibbons are lesser apes: an adult weighs only about six to nine kilograms, and their very long arms let them practise brachiation, swinging hand over hand through the canopy at great speed. Males are black with white brows and females are buff-coloured; pairs sing loud duets at dawn.
A is wrong: it leaves out statement 2, though brachiation is the gibbon's typical way of moving.
C is wrong: it includes statement 3; gibbons are small and light, unlike the massive gorilla.
D is wrong: statement 3 is the only incorrect one.
Exam tip: Hoolock gibbon = India's only ape, Hollongapar Gibbon Sanctuary (Assam), moves by brachiation.
Practice Questions
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- B.community
- C.abiotic environment
- D.ecosystem
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II. In terms of CO2 emissions from fuel combustion, India ranks second in Asia-Pacific region.
III. Electricity and heat producers are the largest sources of CO2 emissions in India.
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- D.I, II and III
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Select the correct answer using the code given below.
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- B.2 and 3 only
- C.1 and 3 only
- D.1, 2 and 3
Show answer
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