Question

Assertion (A): The basic filtration unit in the kidneys, like in the lungs, is a cluster of very thin-walled blood capillaries. 

Reason (R): Each capillary cluster in the kidney is associated with the cup-shaped end of a coiled tube called Bowman’s capsule.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).

• Assertion (A) is true, but Reason (R) is false.

• Assertion (A) is false, but Reason (R) is true.

Answer 1

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Explanation:

The kidney’s filtration unit consists of the glomerulus, which is a cluster of thin-walled capillaries designed for efficient diffusion, similar to respiratory surfaces. This cluster is specifically associated with the cup-shaped Bowman’s capsule, which serves the purpose of collecting the filtrate separated from the blood.