A-LevelBiologyGas exchange9700/12 · Oct/Nov 2018 · Q331 Mark

Which tissues are present in a bronchus?

Acartilage ✓, ciliated epithelium ✓, smooth muscle ✓

Bcartilage ✓, ciliated epithelium ✓, smooth muscle ✗

Ccartilage ✗, ciliated epithelium ✓, smooth muscle ✓

Dcartilage ✗, ciliated epithelium ✗, smooth muscle ✓

✓ Correct answer

A: cartilage ✓, ciliated epithelium ✓, smooth muscle ✓

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Topic: Gas exchange, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2018 Paper 1 Variant 2, question 33.

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