Question

Function of aldosterone is

• A. Secretion of water and $NH_{3}$ into urine
• B. Secretion of $H^{+}$ and $K^{+}$ ions into urine
• C. Stimulation of reabsorption of $HCO_{3}_{–}$ from urine
• D. Stimulation of reabsorption of $Na^{+}$ and water from renal tubules

Hint:

Aldosterone = Na\textsuperscript{+} and water retention hormone.

Answer 1

The Correct Option is D

Aldosterone acts on the distal tubules and collecting ducts in kidneys, increasing the reabsorption of sodium ions $(Na^{+})$ and water, which helps in maintaining blood pressure and fluid balance.