Excretion in Other Animals · NCERT Biology

Which excretory product is least toxic?

  1. Ammonia gas
  2. Dissolved urea
  3. Uric acid
  4. Creatinine salts
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Correct answer: Uric acid

Uric acid is the least toxic nitrogenous waste. Its low solubility allows safe storage and semi-solid elimination with minimal water loss.

Difficulty: Medium Question 13 of 20

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