alleryThe MOST toxic nitrogenous waste excreted by animals is
AUrea formed in liver tissues
BUric acid as solid pellets
CTrimethylamine oxide in fish
DAmmonia requiring much water
Answer & Solution
Correct answer: D. Ammonia requiring much water
Ammonia is the most toxic nitrogenous waste
its elimination requires large volumes of water (ammonotelism).
Urea (intermediate toxicity) suits terrestrial mammals
uric acid (least toxic) suits birds and reptiles.
Keep practising Unit 8R: Environmental Pollution & Organismal Health
Browse all Unit 8R: Environmental Pollution & Organismal Health questions for AP Biology, or explore more Biology topics.
Related questions
HIV primarily infectsCervical cancer is most commonly caused byVaccination provides protection against future infection mainly byAntibodies are produced byThe spread of cancer cells from the original site to distant organs is calledAntibodies passed from a mother to her infant through breast milk give the infantInsects breathe throughWhich structure belongs to the conducting (not respiratory) zone?