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JAMB Biology 2011 Question 25

Question 25

Excretion

Which of the following organs regulates the levels of water, salts, hydrogen ions and urea in the mammalian blood?

  1. A.Bladder.
  2. B.Colon.
  3. C.Liver.
  4. D.Kidney.
Show the answer and explanation

Answer: D (Kidney.)

Explanation

The kidneys filter the blood and reabsorb or remove water, salts, hydrogen ions and urea, keeping the blood's composition steady.