Question

An animal in which the oxygenation of blood does not take place in the lungs is :

Answer 1

Correct option: (b)

• Fish is the animal in which the oxygenation of blood does not take place in the lungs instead it occurs in the gills.
• In a fish, the heart pumps deoxygenated blood (containing carbon dioxide) to the gills.
• There the carbon dioxide is diffused out of the blood and the oxygen extracted from the surrounding water is diffused in thus making the blood oxygenated.