Unit 11 · Gas Exchange in Humans

Question Bank

Cambridge IGCSE Biology 0610 · 30 questions

Q11Gas Exchange in Humans

What is the function of cartilage in the trachea?

(a)To trap dust

(b)To keep the trachea open

(c)To produce mucus

(d)To exchange gases

Correct answer: (b) To keep the trachea open

Explanation: Cartilage rings stop the trachea collapsing when pressure falls.

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