alleryWhich nitrogenous waste is the most toxic?
AAmmonia
BAdenine
CAlbumin
DArginine
Answer & Solution
Correct answer: A. Ammonia
1. Ammonia, urea and uric acid are the major nitrogenous wastes.
2. Ammonia is the most toxic form and needs a large amount of water for elimination.
3. Uric acid is the least toxic.
_Source: syllabus Biology, Ch 19 'Excretory Products and their Elimination'_
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