The main nitrogenous waste formed in the body of earthworm is/are___________?
Correct answer: B. Urea
- A. Ammonia
- B. Urea
- C. Uric acid
- D. Trimethylamine oxide
Explanation
Earthworms are mainly ureotelic, so their principal nitrogenous waste is urea, although some ammonia may also be excreted depending on water availability. The likely distractor is ammonia, because it is the simplest nitrogenous waste, but earthworms generally convert more nitrogen into the less toxic urea.
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