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Standard VII
Biology
Blood Vessels
Question

Which of the following vein has least amount of urea?
  1. Pulmonary vein
  2. Hepatic vein
  3. Renal vein
  4. Hepatic portal vein

A
Pulmonary vein
B
Hepatic portal vein
C
Hepatic vein
D
Renal vein
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Solution
Verified by Toppr

The urea formed in the liver is excreted through the urine by the kidneys. Hence, a renal vein which carries the blood from the kidney towards the heart has the least urea concentration in it.
So, the correct answer is option D.

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Given below is a highly schematic diagram of the human blood circulatory system.
(a) Which part (state the number) represents the hearts? Give reason ink support of your answer.
(b) Which numbers represent the following respectively?
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Q4
Which of the following is an example of portal vein?
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Q5
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