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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921. In human beings, normally in which one of the following parts, does the sperm fertilize the ovum?
- A. Cervix
- B. Upper part of the uterus
- C. Fallopian tube
- D. Lower part of the uterus
Explanation: In human beings, fertilization -the process where a sperm fuses with an ovum (egg) normally takes place in the fallopian tube…
Correct answer: Fallopian tube- A. Spermatozoa
- B. Primary oocyte
- C. Secondary spermatocyte
- D. Mature sperms
Explanation: Primary spermatocytes undergo the first meiotic division to produce secondary spermatocytes.
Correct answer: Secondary spermatocyte- A. Fluid secreted by Sertoli cells
- B. Fluid in scrotum
- C. Interstitial fluid
- D. All of the above
Explanation: Sertoli cells are specialized cells found inside the seminiferous tubules of the testes.They play a vital role in protecting and…
Correct answer: Fluid secreted by Sertoli cells- A. Flagella
- B. Pilli
- C. Cilia
- D. All of these
Explanation: Sperm move through the female reproductive tract using a whip-like tail called a flagellum.
Correct answer: Flagella- A. To produce enzymes
- B. To produce sperms
- C. To transfer sperm to the female
- D. Both B and C are correct
Explanation: The testes, specifically the seminiferous tubules, are responsible for spermatogenesis, the process of sperm production.
Correct answer: Both B and C are correct- A. Ureter
- B. Urethra
- C. Testes
- D. All of these
Explanation: The sperm duct, also known as the vas deferens, opens into the urethra.
Correct answer: Urethra- A. 10
- B. 20
- C. 30
- D. 300
Explanation: In a healthy human male, approximately 100 to 300 million sperm are produced each day.This high production rate occurs in the seminiferous…
Correct answer: 300- A. Animal pole
- B. Vegetal pole
- C. Both A and B
- D. None of these
Explanation: In fertilization, the sperm typically enters the ovum at the animal pole.
Correct answer: Animal pole- A. 1-5
- B. 5-13
- C. 15-28
- D. 16-18
Explanation: Explanation for this question will be added soon.
Correct answer: 5-13- A. Uterine and fetal tissues
- B. Uterine and cervix
- C. Cervix and vagina
- D. Ovary and oviduct
Explanation: Explanation for this question will be added soon.
Correct answer: Uterine and fetal tissues- A. Shedding to uterus
- B. Thickening of the uterus wall
- C. Development of follicle
- D. Implantation
Explanation: During the 16-28 day period, if fertilization has occurred, the uterus prepares for potential implantation by thickening its lining.
Correct answer: Thickening of the uterus wall- A. Voice deepens
- B. Pubic hair growth
- C. Hips broaden
- D. Start of menstrual cycle
Explanation: At puberty, females experience several physical and hormonal changes due to increased levels of estrogen and other hormones.
Correct answer: Voice deepens- A. Placenta disintegration
- B. Distension of cervix
- C. Secretion of oxytocin
- D. Estrogen production
Explanation: Oxytocin is a hormone that plays a crucial role in inducing labor. It is released in response to various stimuli, such as cervical…
Correct answer: Secretion of oxytocin- A. Menopause
- B. Menarche
- C. Huge hips
- D. Hairs
Explanation: Menopause is the cessation of menstrual cycles and reproductive capacity, typically occurring in middle-aged or older women.
Correct answer: Menopause935. Test tube helps in:
- A. In vitro fertilization
- B. In vivo fertilization
- C. Both A and B
- D. Ex vitro fertilization
Explanation: "In vitro" means "in glass" in Latin. In vitro fertilization (IVF) is a process where fertilization occurs outside the body in a…
Correct answer: In vitro fertilization- A. Prolactin (LTH)
- B. Human Placental Lactogen (hPL)
- C. Placenta
- D. All of these
Explanation: The correct answer is Prolactin (LTH). Prolactin is the hormone primarily responsible for stimulating milk production in the mammary…
Correct answer: Prolactin (LTH)- A. Late 50s
- B. Mid 40s
- C. Teens
- D. Early 20s
Explanation: Menopause is a point in time 12 months after a woman's last period.The menopausal transition most often begins between ages 45 and…
Correct answer: Late 50s- A. Anaphase I
- B. Prophase I
- C. Metaphase I
- D. Metaphase ll
Explanation: When a female ovulates, the secondary oocyte (not the primary oocyte) is released from the ovary.
Correct answer: Metaphase ll- A. In uterus
- B. In ovary
- C. In distal part of oviduct
- D. In proximal part of oviduct
Explanation: Fertilization occurs in the distal part of the oviduct (ampulla) because it is closest to the ovary and provides the ideal environment for…
Correct answer: In distal part of oviduct940. Oogenesis starts:
- A. From puberty
- B. At menarche
- C. At the adult stage
- D. Before birth
Explanation: Oogenesis begins during fetal development, before birth. In females, primordial germ cells develop into oogonia, which eventually give…
Correct answer: Before birth