Alveoli increase surface area for exchange of gases
A. (i) and (iv)
B. (ii) and (iii)
C. (i) and (iii)
D. (ii) and (iv)
Answer:D
Alveoli increase surface area for exchange of gases
A. (i) and (iv) B. (ii) and (iii) C. (i) and (iii) D. (ii) and (iv)
Explanation: Statement i) is wrong because ribs move outward and diaphragm is lowered during inhalation. Similarly Option iii) is wrong because Hemoglobin has greater affinity for Oxygen than CO2.