Whales, the world's largest living mammals, live in the oce…

Biology Organisms and Populations Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 20, 2026

Whales, the world's largest living mammals, live in the ocean, but there are no very small aquatic mammals why?

They get eaten by larger animals

They cannot regulate body temperature effectively in water

Their kidneys cannot handle life in the marine environment

They lose too much heat from evaporation

Text Solution

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The correct answer is:

Very small mammals would lose body heat rapidly in water due to a high surface area to volume ratio. This makes it difficult for them to maintain a constant body temperature.

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