O-LevelBiologyCoordination & Response5090/11 · May/June 2014 · Q241 Mark

The diagrams show the bones of the forelimb in a bat and in a human. Which structure in the forelimb of the bat can be identified as the humerus? [Figure 24.1]

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AStructure A, pointing to the shoulder region of the bat's forelimb

BStructure B, pointing to the humerus bone of the bat's forelimb

CStructure C, pointing to the radius and ulna bones of the bat's forelimb

DStructure D, pointing to the digits/phalanges of the bat's forelimb

✓ Correct answer

D: Structure D, pointing to the digits/phalanges of the bat's forelimb

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2014 Paper 1 Variant 1, question 24.

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