O-LevelBiologyCoordination & Response5090/12 · May/June 2019 · Q201 Mark

How will the skin of an athlete respond during a long run? width of blood vessels sweating in skin surface decreases decreases decreases increases increases decreases increases increases

Adecreases, decreases

Bdecreases, increases

Cincreases, decreases

Dincreases, increases

✓ Correct answer

D: increases, increases

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2019 Paper 1 Variant 2, question 20.

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