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Question

Metabolic rate will be highest in.

A
Elephant
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B
Rat
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C
Horse
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D
Human
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Solution

The correct option is C Rat
The metabolic rate is the rate at which the breakdown of nutrients occurs.
small size animals have a high surface area volume ratio. As we know the small animal has less surface area compared to big animals they also lose body heat faster than big animals. So, if they want to maintain homeostasis they need to maintain a high metabolic rate.
Hence, the correct answer is (B)


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