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Question
Which of the following organisms is NOT a poikilotherm?
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Solution
The correct option is C Man
Poikilotherms are those organisms whose internal temperature varies greatly with respect to the ambient temperature. Most invertebrates and many vertebrates including fish, amphibians and reptiles are poikilotherms. However, most birds and mammals are homeotherms, which means that they maintain a stable internal temperature irrespective of the surrounding environmental temperature. Of the organisms listed here, man being a mammal is not a poikilotherm.
Poikilotherms are those organisms whose internal temperature varies greatly with respect to the ambient temperature. Most invertebrates and many vertebrates including fish, amphibians and reptiles are poikilotherms. However, most birds and mammals are homeotherms, which means that they maintain a stable internal temperature irrespective of the surrounding environmental temperature. Of the organisms listed here, man being a mammal is not a poikilotherm.
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