1.

Arrange the given steps of respiration in the sequence of event they occur. Choose the correct options given below. (i) Diffusion of gases, \[{{O}_{2}}\] and \[C{{O}_{2}}\] across the alveolar membrane. (ii) Transport of gases by the blood. (iii) Utilisation of \[{{O}_{2}}\] by the cells for catabolic reactions and the resultant releases of\[C{{O}_{2}}\]. (iv) Pulmonary ventilation by which atmospheric air is drawn in and \[C{{O}_{2}}\] rich alveolar air is released out. (v) Diffusion of \[{{O}_{2}}\] and \[C{{O}_{2}}\] between the blood and tissue.

A. (iii), (v), (ii), (i), (iv)                    
B. (iii), (ii), (v), (i), (iv)
C. (v), (iv), (iii), (ii), (i)                    
D. (i), (ii), (iii), (iv), (v)
Answer» B. (iii), (ii), (v), (i), (iv)


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