O-LevelBiologyCoordination & Response5090/11 · May/June 2025 · Q261 Mark
The internal body temperature of some animals, including humans, remains constant even when the external temperature changes. The graph shows how the oxygen used by one of these animals is affected by change in the external temperature. Which conclusion can be made from this graph?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AThe animal stops respiring when the external temperature is greater than 28 °C.
BThe animal's respiration rate increases as the external temperature decreases from 28°C.
CThe internal temperature of the animal decreases as the external temperature increases.
DThe animal's respiration rate increases as the external temperature increases.
✓ Correct answer
B: The animal's respiration rate increases as the external temperature decreases from 28°C.
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