Question

Question 5
Fish 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

Answer 1

The answer is (b).
Gills is the respiratory organ in fishes. This helps the fish to take in oxygen dissolved in water.