Why is there a difference in the rate of breathing between aquatic organisms and terrestrial organisms? Explain.

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Solution

The faster rate of breathing in aquatic animals:
Aquatic organisms breathe more quickly than terrestrial organisms.
This is because the amount of O₂ in water is very small in comparison to the amount of O₂ in air.
As a result, aquatic organisms must breathe faster than terrestrial organisms in order to obtain more O₂.
Aquatic organisms, such as fish, obtain oxygen from the dissolved state of water.
The amount of dissolved oxygen in water is much lower than the amount of oxygen present in the air.
So aquatic animals breathe faster than terrestrial animals to meet the need for required amounts of oxygen.

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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?

Rate of breathing in aquatic organisms is much greater than that in terrestrial ones. Why?

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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