69th B.P.S.C. (Pre) 2023
With reference to the “Gangetic Dolphin”, consider the following statements - 1. The Ganga river dolphin has been categorized as an Endangered animal under the IUCN Red List. 2. It has no crystalline eye lens, which makes it effectively blind. 3. It uses echolocation to move and to hunt. 4. It has been recognized as India’s National Aquatic Animal. Which of the above statements are correct?
aOnly 1, 3 and 4
bOnly 1, 2 and 4
cOnly 2, 3 and 4
dAll of the above✓ Correct
Explanation
The following statements about the Gangetic Dolphin are correct - ❖ In 2009, the Ganga river dolphin was recognized as the National Aquatic Animal of India. ❖ It uses echolocation for movement and hunting. ❖ It has no crystalline eye lens, which makes it effectively blind. ❖ The Ganga river dolphin is classified as Endangered under the IUCN Red List.
environment-ecology