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Question

There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.
(a) What is (i) organ P, and (ii) waste substance Q ?

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Solution

(i) Solution: Organ P is Kidneys.
  • Kidneys are a pair of bean-shaped organs in the human body towards the back, just above the waist.
(ii) Solution: Waste substance Q is Urea.
  • A waste product urea is formed by the decomposition of unused proteins in the liver and is brought into the organ kidney through blood by an artery renal artery.


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