WAEC Biology 2022 Objective — Question 11
Question 11 of 50 from the West African Examinations Council (WAEC) Biology 2022 Objective paper, with the correct answer and a full explanation.
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Use the following processes to answer questions 11 and 12. I – Ribs move upward and outward II – Diaphragm relaxes III – Volume of thorax increases IV – Air is forced out of the lungs Which of the processes take place during inspiration?
- A. I and III onlyCorrect
- B. II and III only
- C. II and IV only
- D. III and IV only
Explanation
During inspiration, the ribs move upward and outward (I) and the volume of the thorax increases (III), drawing air into the lungs.
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