Assertion: The breathing rate of aquatic animals is faster than that of terrestrial animals.
Reason: Aquatic animals has two chambered heart whereas terrestrial animals have four chamberedheart. Justify your answer?
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Aquatic organisms like fishes obtain oxygen from water present in dissolved state through their gills. Since the amount of dissolved oxygen in water is fairly 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 terrestrial organisms.
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