How is oxygen and carbon dioxide

solution:

Oxygen :

(i) 97% in combined state with haemoglobin called oxyhaemoglobin.

(ii) 3% dissolved in plasma.

Carbon dioxide :

(i) 5–7% as dissolved in plasma.

(ii) 70% as sodium bicarbonate in plasma.

(iii) 23% in combined state with haemoglobin called carbaminohaemoglobin.