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Why fresh water fishes excrete large quantity of dilute urine? |
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Answer» Freshwater fishes have the problem of excreting excess water because the animals TISSUES are HYPERTONIC to its surroundings. The nephrons have cilia to sweep a LARGE volume of very dilute urine from the body. Freshwater fishes CONSERVE salts by efficient reabsorption of ions from the filtrate in the nephrons. |
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