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Question
Which is the excretory substance, excreted by fresh water organisms?
Which is the excretory substance, excreted by fresh water organisms?
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Solution
The correct option is C Ammonia
Nitrogenous waste is excreted in 3 forms, urea, ammonia, and uric acid. Organisms excreting ammonia as the waste product are called ammonotelic organisms. Examples include freshwater organisms. The ammonia is highly toxic and highly soluble in water. Organisms excreting uric acid as the waste product are called uricotelic organisms. Reptiles are uricotelic. Organisms excreting urea as waste products are called ureotelic organisms. Cartilaginous fish, mammals are ureotelic organisms.Thus, the correct answer is 'Ammonia.'
Nitrogenous waste is excreted in 3 forms, urea, ammonia, and uric acid. Organisms excreting ammonia as the waste product are called ammonotelic organisms. Examples include freshwater organisms. The ammonia is highly toxic and highly soluble in water. Organisms excreting uric acid as the waste product are called uricotelic organisms. Reptiles are uricotelic. Organisms excreting urea as waste products are called ureotelic organisms. Cartilaginous fish, mammals are ureotelic organisms.
Thus, the correct answer is 'Ammonia.'
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