This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 3 Human Reproduction – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 20 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the main function of prolactin in the body? A) To regulate the menstrual cycle. B) To stimulate the production of breast milk. C) To stimulate the development of female secondary sexual characteristics. D) To control the size of the pupil. Show Answer Correct Answer: B) To stimulate the production of breast milk. 2. In which stage of the menstrual cycle is a mature egg released? A) Ovulation. B) Menstruation. C) Follicle. D) Corpus luteum. Show Answer Correct Answer: A) Ovulation. 3. Name the structure that produces a thin milky fluid that aids in sperm motility and contributes to about 30% of overall semen volume. A) Testis. B) Seminal vesicle. C) Prostate gland. D) Bulbourethral gland. Show Answer Correct Answer: C) Prostate gland. 4. Spermatogenesis (meiosis) is the process by which sperm develop and mature. Which of the following sequences correctly describes the anatomical path of spermatozoa from formation to ejaculation? A) Testes, urethra, prostate, vas deferens. B) . testes, vas deferens, prostate, urethra. C) Prostate, vas deferens, testes, urethra. D) Prostate, urethra, testes, vas deferens. Show Answer Correct Answer: B) . testes, vas deferens, prostate, urethra. 5. Which of the following structures are responsible for attaching the embryo to the mother A) Placenta. B) Amnion. C) Umbilical cord. D) None of the above. Show Answer Correct Answer: A) Placenta. 6. Identify the organ labeled as the main site of fetal development and implantation in the female diagram. A) Ovary releasing oocytes. B) Vagina for childbirth passage. C) Placenta temporary fetal organ. D) Uterus where embryo develops. Show Answer Correct Answer: D) Uterus where embryo develops. 7. At about what temperature would you expect the male testes to be at? A) 34$^{o}$C. B) 28$^{o}$C. C) 40$^{o}$C. D) 37$^{o}$C. Show Answer Correct Answer: A) 34$^{o}$C. 8. What is the amnion? A) A stage in embryonic development. B) A membrane that surrounds the embryo. C) A membrane that surrounds the placenta. D) The fluid that surrounds the embryo. Show Answer Correct Answer: B) A membrane that surrounds the embryo. 9. In which part of the male reproductive system are sperm stored and matured? A) Seminiferous tubules. B) Testes. C) Vas deferens. D) Epididymis. Show Answer Correct Answer: D) Epididymis. 10. Which of the following STI's is treatable, but not curable? A) Herpes. B) Gonorrhea. C) Chlamydia. D) Syphilis. Show Answer Correct Answer: A) Herpes. 11. A gland associated with the male reproductive organs of mammals is A) Prostate gland. B) Phallic gland. C) Mushroom gland. D) Conglobate gland. Show Answer Correct Answer: A) Prostate gland. 12. After ovulation, Graafian follicle forms A) Corpus luteum. B) CBCorpus albicans. C) Corpus artesia. D) Corpus callosum. Show Answer Correct Answer: A) Corpus luteum. 13. Which of the following is not a function of Oestrogen? A) Causes the endometrium to thicken. B) Prevents the production of a new egg. C) Causes the uterus to contract. D) None of the above. Show Answer Correct Answer: C) Causes the uterus to contract. 14. The menstrual cycle temporarily stops during ..... A) Adolescence. B) Ovulation. C) Pregnancy. D) Puberty. Show Answer Correct Answer: C) Pregnancy. 15. Test-tube baby means a baby born when- A) It develops from a non-fertilized egg. B) It developed in a test-tube. C) It is developed through tissue culture method. D) The ovum is fertilized externally and there after implanted in the uterus. Show Answer Correct Answer: D) The ovum is fertilized externally and there after implanted in the uterus. 16. Receptors for sperm binding in mammals are present on A) Vitelline membrane. B) Perivitelline space. C) Corona radiata. D) Zona pellucida. Show Answer Correct Answer: D) Zona pellucida. 17. The embryo with 8-16 blastomeres is called A) Morula. B) Blastula. C) Gastrula. D) None of these. Show Answer Correct Answer: A) Morula. 18. Which of these methods is called natural family planning? A) Tracking basal temperature. B) Tracking changes in cervical mucus. C) Tracking the menstrual cycle on a calendar. D) All of the above. E) None of the above. Show Answer Correct Answer: D) All of the above. 19. If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from (2011) A) Testes to epididymis. B) Epididymis to vas defrens. C) Ovary to uterus. D) Vagina to uterus. Show Answer Correct Answer: A) Testes to epididymis. 20. The slope of the growth curve begins to decline when ..... sets in A) Biotic potential. B) Environmental resistance. C) Carrying capacity. D) None of the above. Show Answer Correct Answer: B) Environmental resistance. 21. Compare the numbers of male and female gametes produced. A) Females produce more gametes. B) B) Males produce more gametes. C) Both produce the same number. D) Number varies with age. Show Answer Correct Answer: B) B) Males produce more gametes. 22. Which of these organs produce the ova? A) Vagina. B) Uterus. C) Cervix. D) Ovaries. Show Answer Correct Answer: D) Ovaries. 23. The tubules that carry sperms from rete testis is A) Vasa efferentia. B) Inguinal canal. C) Vas deferens. D) Seminiferous tubules. Show Answer Correct Answer: A) Vasa efferentia. 24. Which of the following hormones are secreted in large quantities during pregnancy in women? A) LH, estrogen and estradiol. B) HCG, progesterone, estradiol and FSH. C) HCG and hPL. D) HCG, hPL, progesterone, estrogen and LH. Show Answer Correct Answer: C) HCG and hPL. 25. Which phase the LH hormone highest? A) Menstrual phase. B) Luteal phase. C) Ovulation phase. D) Follicular phase. Show Answer Correct Answer: C) Ovulation phase. 26. Which of the following depicts the correct pathway of transport of sperms? A) Rete testis Vas deferens Efferent ductules Epididymis. B) Efferent ductules Rete testis Vas deferens Epididymis. C) Rete testis Epididymis Efferent ductules Vas deferens. D) Rete testes Efferent ductules Epididymis Vas deferens. Show Answer Correct Answer: D) Rete testes Efferent ductules Epididymis Vas deferens. 27. The 8 to 16 celled condition of the zygote is ..... A) Blastula. B) Morula. C) Gastrula. D) None of the above. Show Answer Correct Answer: B) Morula. 28. How does a developing fetus get their oxygen? A) They don't need oxygen while in the womb. B) Through their lungs. C) Through the blood cells of the parent. D) Through their liver. Show Answer Correct Answer: C) Through the blood cells of the parent. 29. In human female menstrual cycle cease around the age of A) 60. B) 40. C) 50. D) 58. Show Answer Correct Answer: C) 50. 30. In which country does the contraceptive pill is used the most? A) France. B) China. C) US. D) UK. Show Answer Correct Answer: A) France. 31. Deposition of sperm in female tract A) Insemination. B) Ejaculation. C) Capacitation. D) Agglutination. Show Answer Correct Answer: A) Insemination. 32. What is the name of the structure that carries sperm from the testes to the urethra? A) Seminal vesicle. B) Vas deferens. C) Ejaculatory duct. D) Prostate gland. Show Answer Correct Answer: B) Vas deferens. 33. A disc like structure which is formed by interdigitation of chorionic villi and uterine tissue is known as ..... A) Placenta. B) Pilli. C) Stereocilia. D) Villi. Show Answer Correct Answer: A) Placenta. 34. A chemical or hormon produced by the ovaries. A) Uterus. B) Vas diferens. C) Testosteron. D) Estrogen. Show Answer Correct Answer: D) Estrogen. 35. Which one of the following causes the mammary glands to enlarge at puberty A) Oxytocin. B) Progesterone. C) Testosterone. D) Oestrogen. Show Answer Correct Answer: D) Oestrogen. 36. Which of the following is not a form of artificial contraception A) Avoiding intercourse during the fertile period. B) Cap covers cervix. C) Condom. D) Pill. Show Answer Correct Answer: A) Avoiding intercourse during the fertile period. 37. Release of second polaer body from human egg occurs A) Before the sperm entry. B) After the entery of sperm. C) With no relation to sperm entry. D) After the fertilisation. Show Answer Correct Answer: B) After the entery of sperm. 38. Male and female gametes are A) Ovum and egg. B) Sperm and egg. C) Testes and ovary. D) Sperm and ovary. Show Answer Correct Answer: B) Sperm and egg. 39. Identify the following body changes during puberty:Development of muscles A) Boys ONLY. B) BOTH boys and Girls. C) Girls ONLY. D) None of the above. Show Answer Correct Answer: B) BOTH boys and Girls. 40. Which of the following structures is responsible in producing sperm cells? A) Penis. B) Prostate gland. C) Scrotum. D) Testis. Show Answer Correct Answer: D) Testis. 41. Morula is a developmental stage: A) Between the zygote and blastocyst. B) Between the blastocyst and gastrula. C) After the implantation. D) Between implantation and parturition. Show Answer Correct Answer: A) Between the zygote and blastocyst. 42. Which one of the following is the most likely reason of not occurring regular menstruation cycle in females A) Retention of well developed corpus luteum. B) Fertilization of the ovum. C) Maintenance of the hypertrophical endometrial lining. D) Maintenance of high concentration of sex hormones in the blood stream. Show Answer Correct Answer: B) Fertilization of the ovum. 43. The hormone who's secretion is triggered by foetal ejection reflex is A) Estrogen. B) Relaxin. C) Progesterone. D) Oxytocin. Show Answer Correct Answer: D) Oxytocin. 44. What is the reproductive structure in females with thick muscular walls that holds the zygote. A) Vagina. B) Uterus. C) Ovary. D) Fallopian tube. Show Answer Correct Answer: B) Uterus. 45. Two small glands that secret mucous into the urethra. A) Vas Deferens. B) Testicles. C) Cowper's Gland. D) Epididymis. Show Answer Correct Answer: C) Cowper's Gland. 46. Which hormone signals ovulation? A) LH. B) FSH. C) Estrogen. D) Inhibin. Show Answer Correct Answer: A) LH. 47. What is the structure in side the womb that transports oxygen and nutrients to the baby? A) Amniotic sac. B) Mother's blood. C) Umbilical cord. D) Placenta. Show Answer Correct Answer: C) Umbilical cord. 48. The correct sequence of movement of sperms within the male body is A) Rete testis-seminiferous tubules-vasa efferentia-epididymis-vas deferens. B) Seminiferous tubules-rete testis-vas deferens-epididymis-vasa efferentia. C) Seminiferous tubules-vasa efferentia-epididymis-vas deferens-rete testis. D) Seminiferous tubules-rete testis-vasa efferentia-epididymis-vas deferens. Show Answer Correct Answer: D) Seminiferous tubules-rete testis-vasa efferentia-epididymis-vas deferens. 49. The male reproductive system is formed by the: A) Testicles, penis, cervix and the male accessory glands. B) Testicles, penis, reproductive tract and male accessory glands. C) Testicles, penis, urethra and male accessory glands. D) None of the above. Show Answer Correct Answer: B) Testicles, penis, reproductive tract and male accessory glands. 50. Where are spermatozoa stored while they are maturing? A) In the epidymis. B) In the prostate. C) In the testes. D) In the seminal vesicle. Show Answer Correct Answer: A) In the epidymis. 51. What is the role of the umbilical cord? A) To connect the mother to the fetus. B) To transport blood, oxygen, and nutrients between the placenta and the fetus. C) To produce hormones. D) To remove waste from the fetus. Show Answer Correct Answer: B) To transport blood, oxygen, and nutrients between the placenta and the fetus. 52. Middle piece of mammalian sperm possesses A) Mitochondria. B) Centriole. C) Nucleus and mitochondria. D) Mitochondria and centriole. Show Answer Correct Answer: A) Mitochondria. 53. Another name for the neck of the uterus A) The cervix. B) The vagina. C) The womb. D) The womb. Show Answer Correct Answer: A) The cervix. 54. ( ) is the male sex hormone. A) Adrenaline. B) Testosterone. C) Estrogen. D) Insulin. Show Answer Correct Answer: B) Testosterone. 55. The beginning of menstrual cycle A) Menarch. B) Menopause. C) Menstrual cycle. D) Menstruation. Show Answer Correct Answer: A) Menarch. 56. What is the name of the tube that carries urine in males and females? A) Sperm duct. B) Urethra. C) Fallopian tube. D) Cervix. Show Answer Correct Answer: B) Urethra. 57. The process of formation of the structure before implantation A) Placenta formation. B) Cleavage. C) Gastrulation. D) Blastulation. Show Answer Correct Answer: D) Blastulation. 58. What are the fimbria A) Finger-like structures that guide the egg cell into fallopian tubes. B) The lining of of the uterus. C) The storage structure for sperm. D) Gland that secretes fluid. Show Answer Correct Answer: A) Finger-like structures that guide the egg cell into fallopian tubes. 59. Which of the following structures is incorrectly matched to its function? A) Prostate gland-adds alkaline substances to semen. B) Fallopian tube-site of normal embryonic implantation. C) Testes-Production of testosterone. D) Epididymis-maturation and storage of sperm. Show Answer Correct Answer: B) Fallopian tube-site of normal embryonic implantation. 60. We humans distribute the organic and inorganic nutrients to the body tissues through ..... A) No answer is correct. B) The nervous system. C) The digestive system. D) The circulatory system. Show Answer Correct Answer: D) The circulatory system. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Biology Chapter 3 Human Reproduction Quiz 1Class 12 Biology Chapter 3 Human Reproduction Quiz 2Class 12 Biology Chapter 3 Human Reproduction Quiz 3Class 12 Biology Chapter 3 Human Reproduction Quiz 4Class 12 Biology Chapter 3 Human Reproduction Quiz 5Class 12 Biology Chapter 3 Human Reproduction Quiz 6Class 12 Biology Chapter 3 Human Reproduction Quiz 7Class 12 Biology Chapter 3 Human Reproduction Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books