O-LevelBiologyCoordination & Response5090/11 · May/June 2012 · Q211 Mark

The diagram shows skin temperature of a human when exposed to warm air and then exposed to cold air. [Figure 21.1] What causes the observed change in skin temperature on exposure to cold air?

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.

Aless blood flowing just below the skin

Bless blood going to the heart and lungs

Cmore blood flowing just below the skin

Dmore blood going to the heart and lungs

✓ Correct answer

A: less blood flowing just below the skin

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2012 Paper 1 Variant 1, question 21.

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