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O-LevelBiologyCoordination & Response5090/12 · May/June 2015 · Q201 Mark

The diagram shows some of the structures in human skin. [Diagram] Which labels describe the structures Y and Z in hot conditions?

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Aactive, constricted
Bactive, dilated
Cinactive, constricted
Dinactive, dilated

✓ Correct answer

B: active, dilated

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About this question

Topic
Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2015 Paper 1 Variant 2, question 20.

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