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JAMB Biology 2006 Question 2

Question 2

Excretion

The product of excretion common to the mammalian kidney, lung and skin is

  1. A.mineral salt
  2. B.carbon(IV) oxide
  3. C.water
  4. D.urea
Show the answer and explanation

Answer: C (water)

Explanation

The kidneys remove water in urine, the lungs breathe out water vapour and the skin loses water in sweat. Only water is excreted by all three.