1.

which one is both osmoregulator as well as nitrogenous productsA. `NH_(3)`B. Urea C. uric acidD. all of the above

Answer» Correct Answer - B
Some amount of urea may be retained in the kidney matrix of some of these animals to maintain a desired osmolarity. Urea is less toxic and less soluble in water than `NH_(3)`.Â


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