Secretions of the male accessory glands constitute the seminal plasma. The seminal plasma is rich in:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Fructose, calcium and certain enzymes
The secretions of the paired seminal vesicles, the prostate and the paired bulbourethral glands make the seminal plasma. The book names three things it is rich in: fructose, calcium and certain enzymes. A choice is correct only if all three of its items match.
Option (1) Glucose, calcium and certain enzymes — Incorrect. Calcium and enzymes are right, but the sugar in seminal plasma is fructose, not glucose.
Option (2) Fructose, calcium and certain enzymes — Correct. Fructose, calcium and certain enzymes are the very components named for the seminal plasma.
Option (3) Fructose, sodium and antibodies — Incorrect. Fructose is right, but sodium and antibodies are not named for seminal plasma. Antibodies are named for colostrum, the first milk of the mother.
Option (4) Glucose, sodium and antibodies — Incorrect. None of the three items matches: the sugar is fructose, the mineral named is calcium, and the secretion has enzymes, not antibodies.
NCERT Extract:
The Male Reproductive System – “… The male accessory glands … include paired seminal vesicles, a prostate and paired bulbourethral glands. Secretions of these glands constitute the seminal plasma which is rich in fructose, calcium and certain enzymes. The secretions of bulbourethral glands also helps in the lubrication of the penis.”