Select the incorrect statement/s from the following.
(A) In human male, the testes are situated outside the abdominal cavity within a pouch.
(B) Primary spermatocytes undergo mitosis to form secondary spermatocytes.
(C) Sertoli cells provide nutrition to the germ cells.
(D) Seminal plasma is rich in fructose, calcium and certain enzymes.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (B) and (D) Only
(A) In human male, the testes are situated outside the abdominal cavity within a pouch. — True. The pouch is the scrotum, which keeps the testes 2–2.5 °C below body temperature.
(B) Primary spermatocytes undergo mitosis to form secondary spermatocytes. — False. Primary spermatocytes undergo the first meiotic division to form secondary spermatocytes.
(C) Sertoli cells provide nutrition to the germ cells. — True.
(D) Seminal plasma is rich in fructose, calcium and certain enzymes. — True.
NCERT Extract:
The Male Reproductive System – “… The male accessory glands (Figure 2.1a, b) 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.”
The Male Reproductive System – “… The testes are situated outside the abdominal cavity within a pouch called scrotum.”
The Male Reproductive System – “… The male germ cells undergo meiotic divisions finally leading to sperm formation, while Sertoli cells provide nutrition to the germ cells.”
Gametogenesis – “… A primary spermatocyte completes the first meiotic division (reduction division) leading to formation of two equal, haploid cells called secondary spermatocytes, which have only 23 chromosomes each.”
