Which of the following is a Poikilotherm?

Neophron

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Vipera

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Aptenodytes

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Macaca

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Solution

The correct option is B
Vipera

Fishes, amphibians and reptiles are poikilotherms or cold blooded. Vipera, commonly known as viper, is a snake (reptile) and is hence, a poikilotherm. Neophron (vulture) and Aptenodytes (penguin) are birds, and Macaca (monkey) is a mammal. Birds and mammals are homeotherms (warm blooded).

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