CHAPTER 19 E P - NCERT
amphibians and marine fishes mainly excrete urea and are called ureotelic ... Reptiles, birds, land snails and insects excrete nitrogenous wastes as uric ... Na +, etc., in the filtrate are reabsorbed actively whereas the nitrogenous wastes are absorbed by passive transport. Reabsorption of water also occurs passively in the initial segments of ...
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