Free Reproduction MCQs with Answers
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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- A. human papillomavirus
- B. human immunodeficiency virus
- C. herpes simplex virus
- D. bacterium Neisseria gonorrhoeae
Explanation: Certain strains of HPV produce warts, and other high risk strains can transform cervical cells.
Correct answer: human papillomavirus- A. gonorrhoea
- B. cervical cancer
- C. syphilis
- D. hepatitis A
Explanation: By immunising against the cancer causing strains of human papillomavirus, the vaccine prevents most cases of cervical cancer decades…
Correct answer: cervical cancer- A. syphilis
- B. gonorrhoea
- C. chlamydia
- D. genital herpes
Explanation: Chlamydia is the commonest bacterial STD and often passes unnoticed until it damages the oviducts, causing pelvic inflammatory disease and…
Correct answer: chlamydia- A. Gonorrhoea
- B. Syphilis
- C. AIDS
- D. Trichomoniasis
Explanation: Trichomonas vaginalis is a flagellated protozoan causing discharge and irritation, and it is treated with antiprotozoal drugs.
Correct answer: Trichomoniasis- A. kidney stones
- B. diabetes mellitus
- C. anaemia
- D. pelvic inflammatory disease and infertility
Explanation: The gonococcus can climb from the cervix into the uterus and oviducts, inflaming and scarring them, which blocks the passage of eggs.
Correct answer: pelvic inflammatory disease and infertility46. Which of the following infections can be transmitted sexually but is preventable by vaccination?
- A. Hepatitis B
- B. Gonorrhoea
- C. Syphilis
- D. HIV
Explanation: Hepatitis B virus spreads in blood and sexual fluids and can damage the liver, but a highly effective recombinant vaccine exists.
Correct answer: Hepatitis B- A. only the partner showing symptoms
- B. both partners, to prevent reinfection
- C. only the male partner
- D. only the female partner
Explanation: An untreated partner harbours the organism and passes it straight back, so both must be treated even if one feels well.
Correct answer: both partners, to prevent reinfection- A. Secondary stage
- B. Tertiary stage
- C. Primary stage
- D. Congenital stage
Explanation: About three weeks after infection a chancre forms at the entry point, marking primary syphilis, and heals on its own, which lets the…
Correct answer: Primary stage- A. Epididymis
- B. Seminiferous tubules
- C. Vas deferens
- D. Seminal vesicle
Explanation: Spermatogenesis (sperm production) occurs in the seminiferous tubules of the testes.
Correct answer: Seminiferous tubules- A. Mitochondria
- B. Digestive enzymes
- C. DNA
- D. Flagellar proteins
Explanation: The acrosome contains hydrolytic enzymes (hyaluronidase, proteases) that help sperm penetrate the egg.
Correct answer: Digestive enzymes- A. FSH surge
- B. LH surge
- C. Estrogen decrease
- D. Progesterone increase
Explanation: The LH surge (luteinizing hormone) triggers ovulation, releasing the mature egg from the Graafian follicle.
Correct answer: LH surge- A. FSH and LH
- B. Estrogen and progesterone
- C. hCG
- D. Prolactin
Explanation: The corpus luteum (formed from the ruptured follicle) secretes progesterone and estrogen to maintain the endometrium.
Correct answer: Estrogen and progesterone- A. Uterus
- B. Ovary
- C. Fallopian tube
- D. Vagina
Explanation: Fertilization typically occurs in the ampulla of the fallopian tube (oviduct).
Correct answer: Fallopian tube- A. Corpus luteum
- B. Trophoblast/Placenta
- C. Pituitary
- D. Hypothalamus
Explanation: Human chorionic gonadotropin (hCG) is produced by the trophoblast (developing placenta) to maintain the corpus luteum.
Correct answer: Trophoblast/Placenta- A. Zygote
- B. Blastocyst
- C. Gastrula
- D. Neurula
Explanation: The morula (solid ball of cells) develops into a blastocyst (with inner cell mass and blastocoel) before implantation.
Correct answer: Blastocyst- A. Rise in estrogen
- B. Fall in progesterone and estrogen
- C. Rise in hCG
- D. Rise in LH
Explanation: When pregnancy doesn't occur, the corpus luteum degenerates → progesterone and estrogen fall → endometrium breaks down.
Correct answer: Fall in progesterone and estrogen- A. Testosterone
- B. Nourishment to developing sperm
- C. LH
- D. FSH
Explanation: Sertoli (nurse) cells provide nutrients and support to developing sperm cells in the seminiferous tubules.
Correct answer: Nourishment to developing sperm- A. Rising progesterone
- B. Falling progesterone and rising oxytocin
- C. Rising hCG
- D. Falling estrogen
Explanation: Falling progesterone and rising oxytocin and prostaglandins trigger uterine contractions for childbirth.
Correct answer: Falling progesterone and rising oxytocin- A. Cervix
- B. Uterus
- C. Ovary
- D. Oviduct
Explanation: The blastocyst implants in the thickened endometrium of the uterus, which then supports the pregnancy through the placenta, so receiving…
Correct answer: Uterus- A. Decrease in Estrogen
- B. Decrease in FSH
- C. Increase in FSH
- D. Environmental effect
Explanation: This is the option marked correct in the official UHS answer key. The physiology worth carrying into the exam is that the LH surge is…
Correct answer: Decrease in FSH