Aquatic animals are generally ammonotelic in | vedclass

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(D) Aquatic animals such as $Osteichthyes$ (bony fishes),aquatic amphibians,and aquatic insects excrete ammonia as their primary nitrogenous waste,hen

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(D) Aquatic animals such as $Osteichthyes$ (bony fishes),aquatic amphibians,and aquatic insects excrete ammonia as their primary nitrogenous waste,hence they are known as ammonotelic.Ammonia is highly soluble in water and requires a large volume of water to be dissolved and excreted through the body surface or gill surfaces.Since aquatic animals live in water,the water required for the excretion of ammonia is easily available to them.In contrast,terrestrial animals need to conserve water. Therefore,they excrete urea (ureotelic) or uric acid (uricotelic),which are less toxic than ammonia and require significantly less water for their removal. This is an essential evolutionary adaptation for water conservation in terrestrial environments.

Aquatic animals are generally ammonotelic in nature,whereas terrestrial forms are not. Comment.

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