Free Reproduction MCQs with Answers
1,220 Reproduction MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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 27 of 61
- A. 250
- B. 300
- C. 350
- D. 400
Explanation: Within 10-45 minutes after birth, the uterus contracts and separate the placenta from the wall of the uterus and placenta then passes out…
Correct answer: 350- A. Spermatogonia
- B. Primary spermatocytes
- C. Spermatids
- D. Secondary spermatocytes
Explanation: During spermatogenesis, the spermatids, which are haploid cells, eventually mature into spermatozoa or mature sperm.
Correct answer: Spermatids523. Which hormonal pair would maintain the endometrium and make it receptive for implantation of embryo?
- A. Luteinizing Hormone and Progesterone
- B. Estrogen and Progesterone
- C. Estrogen and Follicle Stimulating Hormone
- D. Luteinizing Hormone and Follicle Stimulating Hormone
Explanation: The hormonal pair that plays a crucial role in maintaining the endometrium (the lining of the uterus) and making it receptive for the…
Correct answer: Estrogen and Progesterone- A. Ovum
- B. Oogonium
- C. Follicle cell
- D. Polar body
Explanation: Inside the ovary, during the process of oogenesis, the primary oocyte undergoes the first meiotic division, resulting in the formation of…
Correct answer: Polar body- A. Days 5 to 10
- B. Days 1 to 5
- C. Days 14 to 15
- D. Days 11 to 14
Explanation: In a typical menstrual cycle of 28 days, the most likely fertile period, when a woman is more likely to conceive, is around the middle of…
Correct answer: Days 14 to 15- A. Synthesis of sperm
- B. Lubrication
- C. Nourishment of sperm
- D. Temperature regulation
Explanation: Thie option D is correct because sperm can survive at the temperature of 34°C, that is why they are outside the body.
Correct answer: Temperature regulation- A. Amniotic sac
- B. Placenta
- C. Chorion
- D. Allantois
Explanation: The human embryo remains enclosed in the amniotic sac, a fluid-filled membrane that provides protection and a stable environment for…
Correct answer: Amniotic sac- A. Endocrine
- B. Digestive
- C. Lymphatic
- D. Male reproductive
Explanation: These structures are integral components of the male reproductive system.
Correct answer: Male reproductive- A. They develop into primary spermatocytes through mitosis
- B. They are undifferentiated
- C. They are germ line cells
- D. They are haploid
Explanation: Spermatogonia are diploid germ cells. They undergo mitosis to maintain the germ cell pool and differentiate into primary spermatocytes…
Correct answer: They are haploid- A. Common
- B. Independent
- C. Both A and B options are correct
- D. None of these options are correct
Explanation: The urethra and vagina have separate openings to the exterior in females.
Correct answer: Independent- A. Menstrual cycle
- B. Puberty
- C. Childhood
- D. Teens
Explanation: Puberty is the stage of adolescence where hormones for secondary sex characters are released and a girl sexually matures.
Correct answer: Puberty- A. Fluid and sperm
- B. Blood and water
- C. Blood and sperm
- D. Blood and fluid
Explanation: In reproduction, semen refers to the fluid that is ejaculated from the male reproductive system.
Correct answer: Fluid and sperm- A. Ovary
- B. Vagina
- C. Oviduct
- D. Uterus
Explanation: In human females, fertilization typically occurs in the fallopian tubes, also known as the oviducts.
Correct answer: Oviduct- A. Estrogen
- B. ADH
- C. Oxytocin
- D. Progesterone
Explanation: Follicle-stimulating hormone (FSH) from the pituitary gland stimulates the ovaries in females.
Correct answer: Estrogen- A. Liquid medium
- B. Protection
- C. Nourishment
- D. All of these
Explanation: The fluid secreted by Sertoli cells provides:Liquid medium - helps transport sperm through the seminiferous tubulesProtection - through…
Correct answer: All of these- A. Stromal cells
- B. Epithelial cells
- C. Germ cells
- D. Theca cells
Explanation: The cells that produce oogonia in the ovary are called primordial germ cells (PGCs).
Correct answer: Germ cells- A. Oviduct
- B. Ovary
- C. Uterus
- D. Vagina
Explanation: During birth, the birth canal is formed by the passage through which the baby travels during delivery.
Correct answer: Vagina- A. Hormone
- B. Gamete
- C. Zygote
- D. Testicle
Explanation: Sex cell are called reproductive cells or gametes.
Correct answer: Gamete- A. Progesterone
- B. FSH
- C. LH
- D. Chorionic gonadotrophic hormone
Explanation: The hormone produced mainly by the corpus luteum in the ovary following ovulation is progesterone.
Correct answer: Progesterone- A. Length of light period
- B. Length of dark period
- C. Both Options A and B are correct
- D. None of these options is correct
Explanation: Both the length of the light period and the length of the dark period play important roles in photoperiodism.
Correct answer: Length of dark period