Question

Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Which part of nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?

Assertion(A): The purpose of making urine is to filter out undigested food from intestine. Reason(R): Kidneys filter the waste and produce urine.