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ANIMALS, ACCUMULATE [, , , , , , , , , , EXCRETION - Jt is the elimina, , Ammonia, urea, Uric acid, carbon, | water, ions like Na’, K", Cl, phosphate, sulphate, eic.,, , , , dioxide,, , met rbolism) from the body of an organism, , Aminonia, * Most toxic., * Highly soluble., * Needs more water for getting, excreted, |* Diffuses across general body, surfaces or gill in fish. Kidney, play no role in its removal., * e.g. ofammonotelic organisms—, , bony fishes, aquatic amphibians, and aquatic insects, tadpole. et, , * Elimination of Ammonia is called, , ammonotelism., , NITROGENOUS WASTES, , * Less toxic., , * Less soluble., , * Requires less water for excretion, , * Terrestrial adaptation for conservation of water, , : in liver ;, * Ammonia —————» Urea, , * e.g. of ureotelic organisms —|, , terrestrial amphibians and marine, , fishes (cartilagenous fish),, , mammals., * Elimination of urea is called ureo_telism., , NH, > Urea > Uric acid (Toxicity, solubili, , , , Either by metabolic activities, or, Excess ingestion., , , , tion of waste products (especially nitrogen containingproduced during, , Gapeuad, , Uric acid, , * Least toxic., , * Least soluble, , * Eliminated with least loss of, water, as pellets or paste, , * e.g. ofuricotelic organisms—birds,, reptiles, land snails & insects, (cockroach)., , '* Terrestrial adaptation for, conservation of water:, , |* Uricotelism is excretion of uric., , acid., , : Catabolism este:, * Purines ————_—> Uric acid., , Ag