O-LevelBiologyCoordination & Response5090/12 · Oct/Nov 2023 · Q261 Mark

Descriptions of the body's response to changes in temperature are listed. 1 Arterioles in the skin surface constrict. 2 Arterioles in the skin surface dilate. 3 Hair erector muscles contract. 4 Hair erector muscles relax. 5 Sweat evaporates from the skin. 6 Muscles contract spontaneously. Which descriptions apply to the body's response to hot weather?

A1, 3 and 6

B1, 4 and 5

C2, 3 and 5

D2, 4 and 5

✓ Correct answer

D: 2, 4 and 5

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2023 Paper 1 Variant 2, question 26.

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