Question

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

Answer 1

Breathing stands for inhalation of oxygen and exhalation of carbon dioxide. Breathing rate and depth are regulated to meet metabolic demands for delivery of oxygen and removal of carbon dioxide. respiratory rate changes based on many health and activity factors. The normal respiratory rate also differs in adults and children.

Step by step answer: Aquatic organisms like fishes obtains oxygen from water present in dissolve states through gills. The amount of dissolved oxygen in water is firstly low compared to the amount of oxygen in the air. The rate of breathing in aquatic organisms is much faster due to the low concentration of oxygen in the aquatic environment than that seen in territorial organisms.
Scientific reasons: A terrestrial organism can obtain oxygen directly from the air and have a low breathing rate but aquatic organisms have to obtain oxygen for respiration which is dissolved in water. the solubility of oxygen even in water is less and hence the amount of oxygen available to the aquatic Organism is less As compared to those living in the terrestrial region. Hence, to cope up with the demand for oxygen, Critic animals breathe faster as compared to terrestrial organisms.
Additional information: Just like animals fish need to survive but instead of breathing air, fresh extract their oxygen from the water around them. This is often no easy because air can hold 33 times more oxygen than water. So, fishes need to breather than terrestrial animals.
Fortunately, fishes have and evolved igneous mechanisms to overcome their oxygen surprised environment through their highly specialized gills.

Note: Oxygen would quickly pass from the water into the blood until the accident level of the blood and water rapidly become an equivalent, and oxygen discussion into the blood would stop. The maximum amount of oxygen that the blood could devour would be only half the entire amount of oxygen within the water. It proves that fish are true masters of breathing.