O-LevelBiologyRespiration5090/12 · Oct/Nov 2017 · Q181 Mark

The diagram shows the human gas exchange system. What are the labelled parts? [Figure 18.1]

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A1: alveolus, 2: trachea, 3: bronchus, 4: bronchiole

B1: bronchiole, 2: alveolus, 3: trachea, 4: bronchus

C1: bronchus, 2: bronchiole, 3: alveolus, 4: trachea

D1: trachea, 2: bronchus, 3: bronchiole, 4: alveolus

✓ Correct answer

D: 1: trachea, 2: bronchus, 3: bronchiole, 4: alveolus

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2017 Paper 1 Variant 2, question 18.

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