Birds excrete a semi-solid, white coloured substance consisting of _________.
A
bile
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B
ammonia
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C
urea
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D
uric acid
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Solution
The correct option is D uric acid Nitrogenous wastes in birds is excreted as a semi-solid, white coloured substance composed of uric acid. The excretory product in humans is urea. The excretory product in fishes is ammonia.