Fishes take in oxygen dissolved in water through their ________.
Oxygen and carbon dioxide dissolve in water and most fishes exchange dissolved oxygen and carbon dioxide in water by means of their gills.
We take in oxygen present in air through our lungs. Fishes take in oxygen dissolved in water through their________.
Question 5 Fishes breathe with the help of gills which are richly supplied with blood vessels. The gills help the fish to (a) take in oxygen from air. (b) take in oxygen dissolved in water (c) absorb nutrients present in water (d) release waste substances in water