Question

What advantage over an aquatic organism does a terrestrial organism
have with regard to obtaining oxygen for respiration?​

Answer 1

Animals living in water need use the oxygen dissolved in water. However the amount of dissolved oxygen is fairly low compared to the amount of oxygen in the air. Hence, the aquatic organisms has much faster rate of breathing. Terrestrial organisms, on the other hand, obtain oxygen from the oxygen - rich atmosphere through respiratory organs. So, they breathe at a lesser rate than aquatic organisms. Thus terrestrial organisms can facilitate better utilization of food by way of respiration.

Answer 2

Answer:

Terrestrial organism obtains oxygen for respiration from the atmosphere where the oxygen content is high, whereas, aquatic organisms obtain oxygen dissolved in the water which is very low when compared to the amount in atmosphere. For this reason, aquatic animals breathe faster to obtain as much oxygen as possible, on the other hand, terrestrial animal does not have to breathe faster and thus spends less energy than aquatic organism.

Explanation:

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