Question on: JAMB Biology - 2018
The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
What physiological term can used to describe the regulation of the body temperature of the of the Lizard?
A
Homeostasis
B
Homoithermy
C
Poikilothermy
D
Osmoregulation
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Correct Option: C
The lizard's body temperature fluctuates with the environmental temperature, as shown in the graph. This characteristic is described by the term "poikilothermy".
* **Poikilothermy:** The ability of an animal to maintain its body temperature by absorbing heat from its surroundings.
* **Homeostasis:** The maintenance of a stable internal environment, including temperature regulation, in an organism. While temperature regulation is part of homeostasis, poikilothermy specifically describes the type of temperature regulation seen in the lizard.
* **Homoithermy:** The ability of an animal to maintain a constant internal body temperature, regardless of the external environment (warm-blooded).
* **Osmoregulation:** The active regulation of the osmotic pressure of an organism's body fluids to maintain the homeostasis of the organism's water content.
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