O-LevelBiologyCoordination & Response5090/11 · Oct/Nov 2011 · Q211 Mark

What helps heat retention in the human body?

Aactively secreting sweat glands

Bdilated skin blood vessels

Cfat in and under the skin

Drelaxed hair erector muscles

✓ Correct answer

C: fat in and under the skin

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2011 Paper 1 Variant 1, question 21.

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