The function of cartilage in the trachea is to

  1. exchange gases
  2. produce mucus
  3. keep the airway open
  4. contract to narrow the airway
Answer

C) keep the airway open

Cartilage prevents collapse. AS & A Level Biology · Topic 9 Gas Exchange · 9.1 The gas exchange system

Biology MCQ · More A Level Biology: Gas exchange MCQs · Practise