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What is Poikilotherm in Biology? PDF | Download eBooks

Learn Poikilotherm definition in biology with explanation to study “What is Poikilotherm”. Study poikilotherm explanation with biology terms to review biology course for online degree programs.

Poikilotherm Definition

  • An animal whose body temperature varies with its environment is called a poikilotherm.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson



Poikilotherm Explanation

A poikilotherm is an animal whose internal temperature varies considerably. It is the opposite of a homeotherm, an animal which maintains thermal homeostasis. While the term in principle can apply to all organisms, it is generally only applied to animals, and mostly to vertebrates. Usually the fluctuations are consequence of variation in the ambient environmental temperature. Many terrestrial ectotherms are poikilothermic.

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