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A desert lizard (an ectotherm ) and a m...

A desert lizard (an ectotherm ) and a mouse (an endotherm) are placed inside a chamber at `15^(@)C` and their body temperature [T(L) for the lizard and T(M) for the mouse] and metabolic rates [ML(L) for the lizard nad M(M) for the mouses] are monitored. Which one of the following is correct-

A

T(L) and M(L) will fall while T(M) will increase

B

T(L) and M(L) will increase while T(M) and M(M) will fall

C

T(L) and M(L) will fall, T(M) will remain same and M(M) will increase

D

T(L) and M(L) will remain same and T(M) and M(M) will decrease

Text Solution

Verified by Experts

The correct Answer is:
C
Desert lizard is an ectotherm (poikiliotherm ) whose body temperature vaires according to enviromental temperature .
So, at `15^(@)C` T(L) will fal due ot fall in T(M)
While mouse is a endotherm (Homeotherm) whose body temperature remains constant always due to variation is metabolic rate
In homeotherms metabolic rate is inversely proportinal to enviromental tempertue.
So at `15^(@)C` T(M) remain same and M(M) will increased.
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