NEET Biology Excretory Products And Their Elimination Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Excretory Products And Their Elimination Topic Based

Question & Answer Discuss:

Assertion :
Kidney maintains the osmotic concentration of the blood.
Reason :
Kidney eliminates either hypotonic or hypertonic urine according to the need of the body.

(a) If Assertion is true but Reason is false.

(b) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

(c) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

(d) If both Assertion and Reason are false.

Answer: (b)

Kidney plays an important role in maintaining the concentration and osmotic pressure of blood. When water intake of an animal is very high, the urine excreted has to be hypotonic and lower in osmotic pressure than their blood in order to remove the excess water. On the contrary, when there is a shortage of water, the urine excreted needs to be hypertonic and higher in osmotic pressure than their blood to reduce the loss of water with urine.

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