Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms ?

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Solution

Answer:

Aquatic organisms like fishes obtain oxygen from water present in dissolved state through their respiratory organ gills.

Since the amount of dissolved oxygen in water is low compared to the amount of oxygen in the air, the rate of breathing in aquatic organisms is much faster because of the low concentration of oxygen in the aquatic environment than that seen in terrestrial organisms.

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Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms ?

Question 56
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?

Q. An organism X having breathing organs A lives on land. When organism X goes under water, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes and rivers can survive on land as well as in water equally well.
(a) What could organism X be? Name the breathing organs A.
(b) What could organism Y be? Name the breathing organs B.
(c) What could organism Z be? Name the breathing organs C and D.
(d) Out of X, Y and Z, which organism is (i) amphibian, (ii) aquatic, and (iii) terrestrial?

Question 56
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?

Name the source of oxygen for terrestrial animals and aquatic animals. Why is the rate of breathing in aquatic organisms faster than in terrestrial organisms?

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