Discussion

Match the hormones in Group I with their functions in Group II

Group I	Group II
P) Aldosterone	1) Stimulates the synthesis and secretion of androgens from the testis
Q) Luteinizing hormone (LH)	2) Helps in the re-absorption of Na⁺ and water from the kidney
R) Atrial natriuretic factor (ANF)	3) Increases the heart rate and the strength of heart contraction.
S) Epinephrine	4) Causes dilation of blood vessels and reduction of blood pressure

Answer: B

The correct match is P-2, Q-1, R-4, S-3.

Aldosterone acts on the kidney tubules to increase reabsorption of Na⁺ and, with it, water.
Luteinizing hormone stimulates the Leydig cells of the testis to make and secrete androgens.
Atrial natriuretic factor, released by the heart's atria, dilates blood vessels and lowers blood pressure.
Epinephrine increases the heart rate and the strength of contraction.

P-2, Q-3, R-4, S-1 swaps LH and epinephrine. The options starting P-1 or P-3 give aldosterone a function it does not have.

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