MCQ
Trimethylamine is the excretory product in:
  • A
    Molluscs
  • B
    Freshwater fishes
  • C
    Amphibious
  • D
    Marine teleost

Answer

D. Marine teleost
Explanation:
Certain marine molluscs, crustaceans, and teleost fishes first form trimethylamine from their ammonia by a process known as methylation. Then, the trimethylamine is oxidized to trimethylamine oxide for excretion. This oxide is soluble in water, but non-toxic.

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