A) man
B) earthworm
C) cockroach
D) frog
Correct Answer: C
Solution :
Cockroach excretes uric acid as the chief nitrogenous excretory product. Man excretes urea as the chief nitrogenous excretory product. Earthworm excretes 40% urea, 20% ammonia and 40% amino acids. Frog excretes urea as the chief nitrogenous product.
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