Question
[107]. Read the following passage carefully:
Passage: "The river dolphin of the Ganga is almost blind and finds its way by sound. It sends out clicks and listens for echoes from fish, riverbed and obstacles — a skill called echolocation. Because it lives in murky water, sight would be of little use, but sound travels well underwater. Noise from boats, dams that break its habitat into parts, and fishing nets now threaten it. Protecting the dolphin means protecting quiet, connected stretches of river, not only the animal itself. Its survival is a measure of the river's health." Why is sight of little use to the river dolphin?
Option 1 : Because it lives in murky water where sound travels better.
Detailed Solution
सही उत्तर Because it lives in murky water where sound travels better. है।
In murky water, sight is poor while sound travels well, so echolocation matters.
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prepsnap.in • Mock TestQuestion:
[107]. Read the following passage carefully:
Passage: "The river dolphin of the Ganga is almost blind and finds its way by sound. It sends out clicks and listens for echoes from fish, riverbed and obstacles — a skill called echolocation. Because it lives in murky water, sight would be of little use, but sound travels well underwater. Noise from boats, dams that break its habitat into parts, and fishing nets now threaten it. Protecting the dolphin means protecting quiet, connected stretches of river, not only the animal itself. Its survival is a measure of the river's health." Why is sight of little use to the river dolphin?
Correct Answer: Because it lives in murky water where sound travels better.
In murky water, sight is poor while sound travels well, so echolocation matters.