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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Read the Reproduction notesFree MDCAT chapter notes with key terms1,220 questions · page 13 of 61
- A. Food and oxygen only
- B. Waste only
- C. Both nutrients and waste
- D. Only hormones
Explanation: Placenta enables transfer of O₂, nutrients, and removal of CO₂, wastes between mother and fetus.
Correct answer: Both nutrients and waste- A. Fertilization
- B. Implantation
- C. Parturition
- D. Lactation
Explanation: Parturition is the process of childbirth triggered by oxytocin.
Correct answer: Parturition- A. Progesterone
- B. Estrogen
- C. Oxytocin
- D. Relaxin
Explanation: Oxytocin from posterior pituitary induces strong uterine contractions during labor.
Correct answer: Oxytocin- A. Fourth month
- B. Fifth month
- C. Sixth month
- D. Third month
Explanation: The mother usually feels the first fetal movements (quickening) around the 5th month.
Correct answer: Fifth month- A. Chorion
- B. Amnion
- C. Allantois
- D. Yolk sac
Explanation: Amnion encloses amniotic fluid, protecting the embryo.
Correct answer: Amnion- A. Acrosome reaction
- B. Fusion of nuclei
- C. Cleavage
- D. Cortical reaction
Explanation: Acrosome releases enzymes that allow sperm to penetrate the ovum.
Correct answer: Acrosome reaction- A. Fertilization
- B. 2 weeks
- C. 8 weeks
- D. Birth
Explanation: After 8 weeks of development, embryo is termed fetus.
Correct answer: 8 weeks- A. Amnion
- B. Umbilical cord
- C. Chorion
- D. Allantois
Explanation: Umbilical cord contains blood vessels for exchange between fetus and placenta.
Correct answer: Umbilical cord- A. Condom
- B. Oral pills
- C. Vasectomy
- D. Copper-T
Explanation: Condom is a barrier method preventing sperm entry into vagina.
Correct answer: Condom- A. Tubectomy
- B. Condom
- C. Oral pill
- D. Withdrawal method
Explanation: Tubectomy = cutting/tying fallopian tubes, blocking egg transport.
Correct answer: Tubectomy- A. Blastula
- B. Morula
- C. Gastrula
- D. Embryo
Explanation: Early cleavage results in morula → then blastocyst.
Correct answer: Morula- A. Zygote
- B. Morula
- C. Blastocyst
- D. Gastrula
Explanation: Blastocyst embeds into uterine lining ~7th day after fertilization.
Correct answer: Blastocyst- A. LH
- B. Progesterone
- C. Estrogen
- D. Oxytocin
Explanation: Progesterone maintains endometrium and supports pregnancy.
Correct answer: Progesterone- A. Ovary
- B. Cervix
- C. Uterus
- D. Fallopian tube
Explanation: Fertilization occurs in ampulla of fallopian tube.
Correct answer: Fallopian tube- A. Spermatogonia → Primary spermatocyte → Secondary spermatocyte → Spermatid → Sperm
- B. Spermatogonia → Spermatid → Primary spermatocyte → Secondary spermatocyte → Sperm
- C. Spermatogonia → Spermatid → Sperm → Spermatocyte
- D. Spermatid → Spermatogonia → Sperm → Primary spermatocyte
Explanation: This is the correct chronological order of sperm formation.
Correct answer: Spermatogonia → Primary spermatocyte → Secondary spermatocyte → Spermatid → Sperm- A. Glycoprotein layer around ovum
- B. Hormone secreted by corpus luteum
- C. Extraembryonic membrane
- D. A type of follicle
Explanation: Zona pellucida regulates sperm binding and prevents polyspermy.
Correct answer: Glycoprotein layer around ovum- A. Gonorrhea
- B. Syphilis
- C. Malaria
- D. HIV/AIDS
Explanation: Malaria is mosquito-borne, not sexually transmitted.
Correct answer: Malaria- A. 23
- B. 46
- C. 44
- D. 22
Explanation: Secondary oocyte is haploid, formed after meiosis I.
Correct answer: 23- A. Head only
- B. Head and middle piece
- C. Whole sperm
- D. Acrosome only
Explanation: Only the head (with nucleus) enters ovum; tail is left outside.
Correct answer: Head only- A. Proliferative phase: Rapid regeneration of myometrium and maturation of graafian follicle
- B. Secretory phase: Development of increased secretion from corpus luteum and of progesterone
- C. Menstruation: Breakdown of myometrium and ovum into fertilised
- D. Ovulation: LH and FSH attain peak level and sharp in the secretion of progesterone
Explanation: The secretory phase corresponds to the luteal phase. LH from the anterior pituitary triggers ovulation and stimulates the ovarian follicle…
Correct answer: Secretory phase: Development of increased secretion from corpus luteum and of progesterone