| The graph below shows how gaseous exchange in an amphibian varies with temperature. |
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| The graph shows that at all temperatures, the lungs |
A) Absorb more oxygen than the skin.
B) Absorb less oxygen than the skin.
C) Release more carbon dioxide than the skin.
D) Release less carbon dioxide than the skin.
Correct Answer: D
Solution :
Pulmonary \[C{{O}_{2}}\], is found to be lower than cutaneous \[{{O}_{2}}\], at all temperatures. Note that statement A is a wrong answer. This is because at\[5{}^\circ C\], pulmonary \[{{O}_{2}}\], is lower than cutaneous \[{{O}_{2}}\]although as the temperature increases, the reverse becomes true.
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