This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 3 Human Reproduction – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 15 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. After ovulation Graafian follicle froms A) Corpus luteum. B) Corpus albicans. C) Corpus callosum. D) Corpus artesia. Show Answer Correct Answer: A) Corpus luteum. 2. 16-celled stage of zygote A) Morula. B) Gastrula. C) Blastula. D) Blastocyst. Show Answer Correct Answer: A) Morula. 3. Corpus luteum develops under the influence of A) FSH. B) Estrogen. C) Progesterone. D) LH. Show Answer Correct Answer: D) LH. 4. The acrosome of a sperm contains: A) Hydrolytic enzymes. B) RNA. C) Mitochondria. D) DNA. Show Answer Correct Answer: A) Hydrolytic enzymes. 5. The follicle cells secrete ..... and corpus luteum secretes ..... A) Estrogen, progesterone. B) Progesterone, estrogen. C) Estrogen, estrogen. D) Estrogen and relaxin. Show Answer Correct Answer: A) Estrogen, progesterone. 6. Where is the site of healthy implantation of a fertilized egg? A) Fallopian Tube. B) Ovum. C) Ovary. D) Uterus. Show Answer Correct Answer: D) Uterus. 7. Fertilization occurs in ..... part of the fallopian tube. A) Ampullary isthmus. B) Infundibulum. C) Fimbriae. D) None of the above. Show Answer Correct Answer: A) Ampullary isthmus. 8. Which of the following layers in a graafian follicle is acellular? (2015) A) Stroma. B) Zona pellucida. C) Granulosa. D) Theca interna. Show Answer Correct Answer: B) Zona pellucida. 9. A process in which cells became specialized in structure and function. A) Genomics. B) Enzyme. C) Differentiation. D) Clone. Show Answer Correct Answer: C) Differentiation. 10. Sperms contribute to the development of zygote by providing: A) Centrioles. B) Cytoplasm. C) Nutrients. D) Required activation enzymes. Show Answer Correct Answer: A) Centrioles. 11. The cell formed after meiosis II in male A) Spermatogonion. B) Spermiogenesis. C) Spermeation. D) Spermatid. Show Answer Correct Answer: D) Spermatid. 12. Hormone responsible for ovulation and development of corpus luteum is A) LTH. B) LH. C) ICSH. D) FSH. Show Answer Correct Answer: B) LH. 13. Cortical granules are associated with A) Spermatogenesis. B) Oogenesis. C) Cleavage. D) Fertilization. Show Answer Correct Answer: D) Fertilization. 14. A set of coiled tubes that connect the testes to the urethra is called ..... ? A) Fallopian Tubes. B) Ovary. C) Vas Deterens. D) Testes. Show Answer Correct Answer: C) Vas Deterens. 15. What is a hormone? A) Mr Casey's Pet. B) A biological messenger. C) A physical messenger. D) A Chemical messanger. Show Answer Correct Answer: D) A Chemical messanger. 16. The foetal membrane that forms the basis of the umbilical cord is ..... A) Allantois. B) Amnion. C) Chorion. D) Yolk sac. Show Answer Correct Answer: A) Allantois. 17. How many chromosomes do human sperm have? A) 2. B) 44. C) 46. D) 23. Show Answer Correct Answer: D) 23. 18. The function of the testes is to: A) Produce egg cells. B) Produce semen. C) Produce sperm cells. D) Produce urine. Show Answer Correct Answer: C) Produce sperm cells. 19. It is the process through which the level of a certain substance influences the level ofanother substance? A) Menstruation. B) Feedback. C) LH. D) FSH. Show Answer Correct Answer: B) Feedback. 20. Graffian follicle are found in: A) Testis of mammal. B) Ovary of cockroach. C) Ovary of mammals. D) Ovary of frog. Show Answer Correct Answer: C) Ovary of mammals. 21. Identify the following stages of adolescence:Understands how current choices and decisions have an effect on the future. A) EARLY adolescence. B) MIDDLE adolescence. C) LATE adolescence. D) None of the above. Show Answer Correct Answer: C) LATE adolescence. 22. Which part of the uterus is connected to the vagina? A) The fallopian tubes. B) The cervix. C) The ovaries. D) None of the above. Show Answer Correct Answer: B) The cervix. 23. What is true for cleavage? A) Size of embryo increases. B) Size of cells decreases. C) Size of cells increases. D) Size of embryo decreases. Show Answer Correct Answer: B) Size of cells decreases. 24. Ryan notices that all of his friend's brothers and sisters are tall. What is the most likely explanation for this characteristic? A) They have tall parents that passed on their genes. B) They all have different genes. C) They eat only healthy foods. D) They live in the same environment. Show Answer Correct Answer: A) They have tall parents that passed on their genes. 25. Different cells become different organs in the baby because of which process? A) Multiplication. B) Differentiation. C) Digestion. D) Ovulation. Show Answer Correct Answer: B) Differentiation. 26. The mitochondrion of the sperm cell provides the energy needed by the sperm to swim through the female reproductive system. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 27. We have higher rates of twins and triplets today than we did several decades ago. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 28. Which structure produces testosterone? A) Epididymis. B) Uterus. C) Testes. D) Ovary. Show Answer Correct Answer: C) Testes. 29. TRUE or FLASE:At birth, women already have their full complement of oocytes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 30. The wall of uterus has:A. EctodermB. PerimetriumC. MyometriumD. Endometrium A) A, B. B) A, B, C, D. C) C, D. D) B, C, D. Show Answer Correct Answer: D) B, C, D. 31. Which extra embryonic membrane in humans prevent desiccation of the embryo inside the uterus A) Chorion. B) Allantois. C) Yolk sac. D) Amnion. Show Answer Correct Answer: D) Amnion. 32. Identify the duct through which sperm passes from epididymis to the ejaculatory duct A) Seminiferous tubule. B) Urethra. C) Prostate. D) Vas deferens. Show Answer Correct Answer: D) Vas deferens. 33. It is in this phase in the menstrual cycle that progesterone is signaled to thicken the uterine lining. A) Luteal phase. B) Follicular phase. C) Ovulation phase. D) Menstrual phase. Show Answer Correct Answer: A) Luteal phase. 34. What is the main function of the placenta during pregnancy? A) To provide carbon dioxide and nutrients to the fetus. B) To provide oxygen and nutrients to the fetus. C) To remove blood from the fetus. D) To keep the fetus warm. Show Answer Correct Answer: B) To provide oxygen and nutrients to the fetus. 35. The ..... is a hollow, muscular organ that nourishes and protects a developing fetus. A) Ovaries. B) Vagina. C) Uterus. D) Cervix. Show Answer Correct Answer: C) Uterus. 36. What is the average length of a full-term pregnancy? A) 9 months. B) 42 weeks. C) 40 weeks. D) 36 weeks. Show Answer Correct Answer: C) 40 weeks. 37. Parturition means A) Separation of blastocysts. B) Development of embryo. C) Contraction of uterus. D) Process of birth. Show Answer Correct Answer: D) Process of birth. 38. What is the name of the organ where the fertilized egg implants and develops during pregnancy? A) Brain. B) Liver. C) Stomach. D) Uterus. Show Answer Correct Answer: D) Uterus. 39. The junction of the upper vagina and the lower entrance to the uterus is called the A) Vulva. B) Ovary. C) Fallopian tube. D) Cervix. Show Answer Correct Answer: D) Cervix. 40. This is known as female sex glands. A) Cervix. B) Uterus. C) Fallopian tube. D) Ovary. Show Answer Correct Answer: B) Uterus. 41. Identify the following characteristics of gametogenesis according to its type:Occurs in tests A) Spermatogenesis. B) Oogenesis. C) All the above. D) None of the above. Show Answer Correct Answer: A) Spermatogenesis. 42. LH and FSH are produced only in the ovaries. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 43. The process of cell differentiation ..... A) Lead to specialized cell types. B) Allows multicellular organisms to organize into different tissues. C) Allows different cells to perform different functions. D) All answers are correct. Show Answer Correct Answer: D) All answers are correct. 44. Semen is a mixture of sperm and what? A) Tissue fluid. B) Prostate fluid. C) Extracellular fluid. D) Seminal Fluid. Show Answer Correct Answer: D) Seminal Fluid. 45. The female sex cell is called ..... A) Ovum. B) Embryo. C) Foetus. D) Gland. Show Answer Correct Answer: A) Ovum. 46. Withdrawl of which hormone is the immediate cause of menstruation? A) LH. B) Estrogen. C) FSH. D) Progesterone. Show Answer Correct Answer: D) Progesterone. 47. Pregnancy occurs at the moment of conception. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 48. Which nutrient can help the foetus to grow healthy bones? A) Calcium. B) Vitamin C. C) Carbohydrate. D) Magnesium. Show Answer Correct Answer: A) Calcium. 49. In oogenesis when a diploid cell in the ovary undergoes meiosis, how many ova result? A) 4. B) 1. C) 3. D) 2. Show Answer Correct Answer: B) 1. 50. What the unborn baby is called from week 9 of pregnancy until birth. A) Zygote. B) Embryo. C) Fetus. D) None of the above. Show Answer Correct Answer: C) Fetus. 51. Which of the following correctly describes sexual reproduction in humans? A) Fertilisation of the egg takes place inside the male's body. B) Many eggs are fertilised by one sperm. C) The fertilised egg develops in the stomach. D) Fertilisation occurs when a sperm and an egg fuse. Show Answer Correct Answer: D) Fertilisation occurs when a sperm and an egg fuse. 52. Which part of the female reproductive system is the opening of the womb? A) Vagina. B) Cervix. C) Fallopian tube. D) Ovaries. Show Answer Correct Answer: B) Cervix. 53. The small cells with very less cytoplasm produced during oogenesis A) Oocyte. B) Polar body. C) Oogonium. D) Follicle. Show Answer Correct Answer: B) Polar body. 54. If secondary spermatocytes have 20 chromosomes then how many chromosomes present in a spermatogonium cell ..... A) 30. B) 40. C) 20. D) 10. Show Answer Correct Answer: B) 40. 55. Which statement describes the reproductive system of a human male? A) It synthesizes progesterone that regulates sperm formation. B) It produces gametes that transport food for embryo formation. C) It shares some structures with the excretory system. D) It releases sperm that can be used only in external fertilization. Show Answer Correct Answer: C) It shares some structures with the excretory system. 56. Which of the following is NOT true about oogenesis? A) It has 2 steps. B) Step 2 is about 28 days. C) A new ovum is produced every time. D) Step 2 is called ovulation. Show Answer Correct Answer: C) A new ovum is produced every time. 57. Function of hCG is to A) Maintain the corpus luteum during the early stages of pregnancy. B) Promote mammary gland growth in preparation for lactation. C) Prepare for childbirth. D) None of the above. Show Answer Correct Answer: A) Maintain the corpus luteum during the early stages of pregnancy. 58. What is the structure in the womb that filters nutrients and oxygen between mother and baby? A) Amniotic sac. B) Umbilical cord. C) Amniotic fluid. D) Placenta. Show Answer Correct Answer: D) Placenta. 59. During pregnancy, the first couple of weeks are the most important because ..... A) The entire baby is made in the first couple of weeks. B) Genes are not working strong. C) Organs are being formed. D) None of the above. Show Answer Correct Answer: C) Organs are being formed. 60. Each testis has about ..... compartments called ..... A) 250, seminiferous tubules. B) 3, testicular lobules. C) 250, testicular lobules. D) 3, seminiferous tubules. Show Answer Correct Answer: C) 250, testicular lobules. ← 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