Select the incorrect statement/s from the following - (A) In human males, 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 glucose, calcium, and certain enzymes. Choose the correct answer from the options given below:
(c) (B) only
Statement Analysis:
(A) In human males, the testes are situated outside the abdominal cavity within a pouch.
✅ Correct
The testes are located in the scrotum, a pouch outside the abdominal cavity, to maintain a temperature slightly lower than body temperature which is essential for sperm production.
(B) Primary spermatocytes undergo mitosis to form secondary spermatocytes.
❌ Incorrect
Primary spermatocytes actually undergo meiosis I to form secondary spermatocytes, not mitosis.
Mitosis occurs during the initial stage of spermatogonial division, not at this stage.
(C) Sertoli cells provide nutrition to the germ cells.
✅ Correct
Sertoli cells support and nourish developing sperm cells throughout spermatogenesis.
(D) Seminal plasma is rich in glucose, calcium, and certain enzymes.
✅ Correct
Seminal plasma contains nutrients like fructose (a sugar), calcium, enzymes, and other substances essential for sperm viability and motility.
Summary:
Incorrect statement is (B) only.
Important Questions from Human Reproduction
Which of the following does not constitute an accessory duct of the female reproductive system?
The female external genitalia include:
(A) Mons pubis
(B) Hymen
(C) Mammary ducts
(D) Clitoris
(E) Cervix
Choose the correct answer from the options given below:
Select the organ of the female reproductive system where the sperm is not transported at the time of coitus:
Which of the following does not take place before ovulation in human females?
Match List-I with List-II:
List-I (Phase of menstrual cycle) List-II (Days of menstrual cycle) (A) Proliferative phase (I) 14th day (B) Menstrual phase (II) 15th–28th/29th days (C) Secretory phase (III) 1st–5th days (D) Ovulatory phase (IV) 5th–13th days Choose the correct answer from the options given below:
