Please help experts. Excretory products and their elimination

Dear student,
Marine elasmobranchs excrete body fluids like trimethylamine oxide, Na+, Cl-. Ureotelism are organisms that secrete urea and are marine teleosts. Ammonotelism is the phenomenon used to describe excretion of ammonia and such organisms are usually fresh water living or marine, like amoeba. Urecotelic organisms secrete uric acid like birds, insects etc..
Thus, option 4 is correct


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