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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- A. Oxytocin
- B. Vasopressin
- C. Progesterone
- D. FSH
Explanation: The corpus luteum secretes large amounts of progesterone which is essential for maintenance of the endometrium.
Correct answer: Progesterone- A. Luteal phase
- B. Follicular phase
- C. Ovulatory Cycle
- D. Menses
Explanation: After ovulation which occurs in the middle of the menstrual cycle, the empty Graafian follicle continues growth under the influence of LH.
Correct answer: Luteal phase- A. Ovaries and secrete progesterone
- B. Adrenal cortex and secrete adrenaline
- C. Seminiferous tubules and provide nutrition to germ cells
- D. Pancreas and secrete cholecystokinin
Explanation: Sertoli cells are specialized cells found in the seminiferous tubules of the testes.
Correct answer: Seminiferous tubules and provide nutrition to germ cells- A. Isthmus
- B. Infundibulum
- C. Cervix
- D. Ampulla
Explanation: Note: Each Fallopian tube is about 10-12 cm long and extends from the periphery of each ovary to the uterus, the part closer to the ovary…
Correct answer: Infundibulum- A. Progesterone
- B. Estrogen
- C. FSH
- D. FSHRH
Explanation: The correct answer is Progesterone. Menstruation is triggered by the withdrawal of progesterone.
Correct answer: Progesterone- A. At the mid secretory phase
- B. Just before the end of the secretory phase
- C. At the beginning of the proliferative phase
- D. At the end of the proliferative phase
Explanation: Ovulation (the release of secondary oocyte from the graffian follicle) takes place at the end of proliferative phase of menstrual cycle.
Correct answer: At the end of the proliferative phase- A. Day 14
- B. Day 18
- C. Day 1
- D. Day 8
Explanation: In a typical 28-day menstrual cycle, ovulation usually occurs around day 14.
Correct answer: Day 14- A. 4
- B. 8
- C. 2
- D. 1
Explanation: One secondary spermatocyte form two sperm cells. Here is the process of sperm production: Meiosis I: A primary spermatocyte undergoes…
Correct answer: 2- A. The baby is fully developed in a test tube
- B. The process involves tissue culture methods
- C. The ovum is fertilized outside the body and implanted in the uterus
- D. The baby develops from a nonfertilized ova
Explanation: By in vitro fertilization, the ovum is fertilized with sperm outside the body of a woman, providing the ovum with the same environmental…
Correct answer: The ovum is fertilized outside the body and implanted in the uterus- A. Progesterone
- B. Estrogen
- C. LH
- D. GnRH
Explanation: Rising levels of progesterone from the corpus luteum act on endometrium, causing the arteries to elaborate and converting the functional…
Correct answer: Progesterone- A. Long Day
- B. Vernalized plants
- C. Day Neutral
- D. Short Day
Explanation: The plant that flowers only under long, uninterrupted dark periods but fails to flower when the night is interrupted by light is a…
Correct answer: Short Day- A. Stroma
- B. Germinal epithelium
- C. Vitelline membrane
- D. Graafian follicle
Explanation: The correct option is: d) Graafian follicle.Explanation of each option:a) Stroma:The stroma is a supportive and connective tissue…
Correct answer: Graafian follicle- A. Facilitates removal of carbon dioxide and waste material from embryo
- B. Secretes oxytocin during parturition
- C. Facilitates supply of oxygen and nutrients to embryo
- D. Secretes estrogen
Explanation: Parturition is induced by a complex neuroendocrine mechanism. The signals for parturition originate from the fully developed foetus and…
Correct answer: Secretes oxytocin during parturition- A. Colony
- B. Alternation of generation
- C. Parasitism
- D. Polymorphism
Explanation: The life cycle during which one life form (asexual) alternates with other life form (sexual) is known as alternation of generation.
Correct answer: Alternation of generation675. Testes developed inside the abdomen. In which of the following structures do they lie before birth?
- A. Sac
- B. Scrotum
- C. Pouch
- D. Vesicle
Explanation: Scrotum is correct. The male gonads are a pair of testes (singular-testis).
Correct answer: Scrotum- A. Oviducts
- B. Uterus
- C. Vagina
- D. Ureter
Explanation: During ovulation one egg is released from the alternate ovary into the body cavity, which is immediately sucked up into an oviduct.
Correct answer: Oviducts- A. Corpus callosum
- B. Corpus albicans
- C. Corpus luteum
- D. Corpus atresia
Explanation: Corpus luteum is correct.Under action of LH, ruptured follicle changes into a yellowish body called corpus luteum, which produces…
Correct answer: Corpus luteum- A. Ovary
- B. Uterus
- C. Cervis
- D. Fallopian tube
Explanation: Fallopian tube is correct.Fertilization of ovum takes place in proximal part of fallopian tube, also known as oviduct.
Correct answer: Fallopian tube- A. Estrogen
- B. Progesterone
- C. Calcitonin
- D. Oxytocin
Explanation: Oxytocin is the hormone released during childbirth and lactation (nursing).
Correct answer: Oxytocin- A. Ovary
- B. Pituitary gland
- C. Adrenal gland
- D. Testes
Explanation: Follicle-Stimulating Hormone (FSH) is secreted by the pituitary gland. It plays a crucial role in the regulation of the reproductive…
Correct answer: Pituitary gland