This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 3 Human Reproduction – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Identify the correct route of sperm movement A) Vasa efferentia-Rete testis-epididymis-vas deferens. B) Vasa efferentia-epididymis-Rete testis-vas deferens. C) Rete testis-vasa efferentia-epididymis-vas deferens. D) Rete testis-epididymis-vasa efferentia-vas deferens. Show Answer Correct Answer: C) Rete testis-vasa efferentia-epididymis-vas deferens. 2. The process of release of chemicals from the egg that hardens ZP A) Capacitation. B) Polyspermy. C) Cortical reaction. D) Agglutination. Show Answer Correct Answer: C) Cortical reaction. 3. Function of Sertoli Cells is to produce androgens in males. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Where the Fallopian tube ends ..... A) Uterus. B) Eggs. C) Fallopian tube. D) Testes. Show Answer Correct Answer: A) Uterus. 5. Sperm cells in the Russian dwarf hamster contain 14 chromosomes. What is the total number of chromosomes that would be contained in a normal, newly formed zygote of this species? A) 14. B) 42. C) 7. D) 28. Show Answer Correct Answer: D) 28. 6. Match the column-I With Column-II and select the correct option using the codes given below:Column-I Column-IIA. Mono pubis 1. Embryo formationB. Antrum 2. SpermC. Trophectoderm 3. Female external genitalia D. Nebenkern 4. Graafian follicle A) A:2, B:1, C:4, D:2. B) A:3, B:4, C:1, D:2. C) A:1, B:4, C:3, D:2. D) A:3, B:4, C:2, D:1. Show Answer Correct Answer: B) A:3, B:4, C:1, D:2. 7. First or free milk is called ..... A) Rostrum. B) Baby's milk. C) Colostrum. D) Cholesterol. Show Answer Correct Answer: C) Colostrum. 8. Onset of pregnancy A) Stimulates testosterone secretion. B) Leads to degeneration of ovary. C) Inhibits further ovulation. D) Inhibits fusion of egg and sperm nuclei. Show Answer Correct Answer: C) Inhibits further ovulation. 9. Choose the event that does not occur before ovulation. A) Surge of LH hormone. B) Estrogen hormones reach the highest level. C) Formation of Graafian follicle. D) Formation of corpus luteum. Show Answer Correct Answer: B) Estrogen hormones reach the highest level. 10. What is the cervix? A) A tube that carries urine. B) A gland that produces hormones. C) A ring of muscle at the lower end of the uterus. D) A part of the male reproductive system. Show Answer Correct Answer: C) A ring of muscle at the lower end of the uterus. 11. WHAT IS NOT TRUE ABOUT PLACENTA? A) PRODUCES RELAXIN. B) PRODUCES hCG. C) PRODUCES hPL. D) REMOVES CARBON DIOXIDE. Show Answer Correct Answer: A) PRODUCES RELAXIN. 12. Assertion-all copulation can not lead to fertilisation and pregnancy.reason-fertilisation can occur only if the ovum and sperms are transported simultaneously to ampullary region. A) Both assertion and resonare correct and reason is correct explaination of assertion. B) Both assertion and resonare correct and reason is not correct explaination of assertion. C) Assertion is true but reason is false. D) Both assertion and reason are false. Show Answer Correct Answer: A) Both assertion and resonare correct and reason is correct explaination of assertion. 13. Where does fertilisation take place? A) Ovaries. B) Uterus. C) Fallopian Tubes. D) Vagina. Show Answer Correct Answer: C) Fallopian Tubes. 14. Which part of the male reproductive system carries the sperm from the testes to the penis? A) Prostate Gland. B) Bladder. C) Sperm duct. D) Seminal vesicle. Show Answer Correct Answer: C) Sperm duct. 15. Formation of gland with glycogen Enlargement of blood arteriesWhich phase in menstrual cycle describe process above A) Proliferative phase. B) Secretory phase. C) Menstrual flow phase. D) Ovulation. Show Answer Correct Answer: B) Secretory phase. 16. Which substance CANNOT pass from the mother to the foetus? A) Nutrients. B) Blood. C) Drugs. D) Oxygen. Show Answer Correct Answer: B) Blood. 17. Ovulation is trigger by a surge in: A) Estrogen. B) Progesterone. C) LH. D) FSH. Show Answer Correct Answer: C) LH. 18. Identify the following stages of adolescence:Thinking can be more abstract (theoretical) but goes back to concrete thinking when under stress A) EARLY adolescence. B) MIDDLE adolescence. C) LATE adolescence. D) None of the above. Show Answer Correct Answer: B) MIDDLE adolescence. 19. The best way to prevent sexually transmitted infections is A) To use a condom during sexual intercourse. B) Wash your genitals. C) Go to the doctor. D) None of the above. Show Answer Correct Answer: A) To use a condom during sexual intercourse. 20. The weight of a human newborn baby is around ..... A) 3 kilograms. B) 3000 DNA. C) 3 liters. D) 3 grams. Show Answer Correct Answer: A) 3 kilograms. 21. Temperature of the scrotum which is necessary for the functioning of testis is always around ..... below body temperature. A) 6$^\circ$C. B) 2$^\circ$C. C) 5$^\circ$C. D) 4$^\circ$C. Show Answer Correct Answer: B) 2$^\circ$C. 22. How long it takes for the embryo to develop into a baby until it is born? A) 9 months. B) 9 days. C) 9 years. D) 9 weeks. Show Answer Correct Answer: A) 9 months. 23. If an egg that has been fertilized by a sperm splits into two while it is in the fallopian tube, the beginning of two babies can start to grow. These are known as A) Identical twins. B) Fraternal twins. C) Triplets. D) None of the above. Show Answer Correct Answer: A) Identical twins. 24. How does the baby exchange substances between the baby and the mother? A) Ovary. B) Womb. C) Umbilical cord. D) Fallopian tube. Show Answer Correct Answer: C) Umbilical cord. 25. Puberty also comes with Emotional changes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 26. Part of reproductive organ of a female that is responsible to receive sperms during mating. A) Fallopian tube. B) Testes. C) Scrotum. D) Vas deferens. Show Answer Correct Answer: A) Fallopian tube. 27. Fertilisation happens in the A) Vagina. B) Uterus liining. C) Oviduct. D) Uterus. Show Answer Correct Answer: C) Oviduct. 28. The fertilised egg develops in the ovary of a human female. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 29. Which of the following are reproductive cells? A EggB Testis C Ovary D Sperm A) A and C only. B) A and D only. C) B and C only. D) A, B, C and D. Show Answer Correct Answer: B) A and D only. 30. What is the process that occur when a sex cell from the male fuses the one from the female? A) Pregnancy. B) Menstruation. C) Fertilization. D) Puberty. Show Answer Correct Answer: C) Fertilization. 31. What is the correct order of events in fertilization? A) Fusion of gametes, acrosome reaction and then cortical reaction. B) Cortical reaction, fusion of gametes and then acrosome reaction. C) Acrosome reaction, fusion of gametes and then cortical reaction. D) Fusion of gametes, cortical reaction and then acrosome reaction. Show Answer Correct Answer: C) Acrosome reaction, fusion of gametes and then cortical reaction. 32. The pitiutary hormones during reproductive cycle in females are A) FSH and ESTROGEN. B) LH and FSH. C) ESTROGEN and PROGESTERONE. D) None of the above. Show Answer Correct Answer: B) LH and FSH. 33. What does the ovary release every month? A) LH. B) FSH. C) Egg. D) Sperm. Show Answer Correct Answer: C) Egg. 34. Day 1 of the menstrual cycle is ..... A) When the egg is released. B) The first day of a woman's period. C) The last day of a woman's period. D) When she becomes pregnant. Show Answer Correct Answer: B) The first day of a woman's period. 35. The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy. A) Fourth month. B) Third month. C) Fifth month. D) Sixth month. Show Answer Correct Answer: C) Fifth month. 36. Which female reproductive organ receives and holds the fertilized ovum? A) Cervix. B) Ovary. C) Fallopian tube. D) Uterus. Show Answer Correct Answer: D) Uterus. 37. A group of individuals born at the same time is called a ..... A) Biotic potential. B) Survivor. C) Cohort. D) Population. Show Answer Correct Answer: C) Cohort. 38. If A stands for seminal vesicles, B stands for bulbourethral glands, C stands for prostrate gland. the true statement is? A) A and C occurs in pair. B) A and B occur in pair. C) B and C occur in pair. D) All of these. Show Answer Correct Answer: B) A and B occur in pair. 39. Increased IMR and decreased MMR in a population will A) Cause rapid increase in growth rate. B) Result in decline in growth rate. C) Result in an explosive population. D) Not cause significant change in growth rate. Show Answer Correct Answer: D) Not cause significant change in growth rate. 40. Identify the external structure that houses the testes. A) Urethra. B) Prostate gland. C) Scrotum. D) Penis. Show Answer Correct Answer: C) Scrotum. 41. Which one is called the pregnancy hormone: A) Estrogen. B) Progesterone. C) Oxytocin. D) Testosterone. Show Answer Correct Answer: B) Progesterone. 42. Which is the BEST description of biology? A) The study of humans and animals. B) The study of life and living things. C) The study of health care. D) The study of humans, plants, and animals. Show Answer Correct Answer: B) The study of life and living things. 43. When a woman's menstrual cycle becomes irregular and stops. A) Menstruation. B) Ovulation. C) Menopause. D) None of the above. Show Answer Correct Answer: C) Menopause. 44. Luteal hormone is A) ESTROGEN. B) LH. C) PROGESTERONE. D) None of the above. Show Answer Correct Answer: C) PROGESTERONE. 45. The fertilization takes place by the fusion of egg cells and ..... A) Sperm. B) Ovocytes. C) Oocytes. D) All of them. Show Answer Correct Answer: A) Sperm. 46. During fertilization, nucleus in the head of sperm fuses with the ovum nucleus to form a ..... A) Foetus. B) Zygote. C) Baby. D) Embryo. Show Answer Correct Answer: B) Zygote. 47. Females make primary oocytes everyday A) False, they make them every month. B) False, they make them every year. C) False, they are born with all the primary oocytes they'll ever have. D) True. Show Answer Correct Answer: C) False, they are born with all the primary oocytes they'll ever have. 48. Clusters of cells surrounding a single egg are called A) Embryos. B) Spermatozoa. C) Ovaries. D) Follicles. Show Answer Correct Answer: D) Follicles. 49. Different women have menstrual cycle of different lengths A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 50. Indicate the statement which incorrectly describes the structure and its role in male reproductive system. A) Seminiferous tubules produce sperm. B) Epididymis stores immature sperm. C) Seminal vesicles contribute the largest amount of fluid in semen. D) Prostate gland produces acidic fluid to cleanse the urethra. Show Answer Correct Answer: D) Prostate gland produces acidic fluid to cleanse the urethra. 51. The leydig cells as found in the human body are the secretory source of A) Progesterone. B) Seminal plasma. C) Glucagon. D) Androgen. Show Answer Correct Answer: D) Androgen. 52. On average, how many days does the menstrual cycle last? A) 7. B) 21. C) 28. D) 14. Show Answer Correct Answer: C) 28. 53. What part of the sperm helps in penetration in the ovum? A) Tail. B) Acrosome. C) Mitochondria. D) All of these. Show Answer Correct Answer: B) Acrosome. 54. ON AVERAGE, when is a person most fertile (able to become pregnant) during their menstrual cycle? A) About halfway between the start of one menstruation and the next. B) At the start of menstruation. C) 1-5 days before the start of menstruation. D) 5-10 days after the start of menstruation. Show Answer Correct Answer: A) About halfway between the start of one menstruation and the next. 55. What hormones that make endometrium thicker are ..... A) Estrogen and progesterone. B) FSH and progesterone. C) LH and estrogen. D) LH and FSH. Show Answer Correct Answer: A) Estrogen and progesterone. 56. What is the correct term for sex cells (sperm and eggs in humans)? A) Blastocysts. B) Gametes. C) Zygotes. D) Periods. Show Answer Correct Answer: B) Gametes. 57. In oogenesis haploid egg is fertilised by sperm at which stage? A) Oogonium. B) Secondary oocyte. C) Primary oocyte. D) Ovum. Show Answer Correct Answer: B) Secondary oocyte. 58. Which of the following sequences represents the correct order of events in the formation of a human fetus? A) Zygote $\rightarrow$ Blastocyst $\rightarrow$ Embryo $\rightarrow$ Fertilization. B) Blastocyst $\rightarrow$ Embryo $\rightarrow$ Differentiation $\rightarrow$ Zygote. C) Fertilization $\rightarrow$ Zygote $\rightarrow$ Blastocyst $\rightarrow$ Embryo. D) Fertilization $\rightarrow$ Growth $\rightarrow$ Differentiation $\rightarrow$ Zygote. Show Answer Correct Answer: C) Fertilization $\rightarrow$ Zygote $\rightarrow$ Blastocyst $\rightarrow$ Embryo. 59. Which is NOT a part of sexual reproduction? A) Rock. B) Ovary. C) Embryo. D) Egg. Show Answer Correct Answer: A) Rock. 60. Kemampuan manusia untuk menghasilkan keturunan baru disebut ..... A) Respirasi. B) Regenerasi. C) Reproduksi. D) Iritabilitas. Show Answer Correct Answer: C) Reproduksi. 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