Q. 1005.0( 3 Votes )

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 ?

(b) Name (i) artery R; and (ii) vein T.

(c) What are tiny filters S known as?

(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.

Answer :

(a) (i) Kidneys (P) (ii) Urea (Q)

(b) (i) Renal artery (R) (ii) Renal vein (T)

(c) Nephrons (S)

(d) (i) Urine (U) (ii) Bladder (V) (iii) Ureters (W) (iv)Urethra (X)

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