This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 3 Human Reproduction – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Oogenesis in females starts during ..... A) Embryo stage. B) Puberty stage. C) Adult reproductive stage. D) None of the above. Show Answer Correct Answer: A) Embryo stage. 2. What is the primary male sex organ? A) Egg cell. B) Sperm cell. C) Ovary. D) Testes. Show Answer Correct Answer: D) Testes. 3. The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testes is: A) Spermatogonia-spermatid-spermatocyte-sperms. B) Spermatogonia-spermatocyte-spermatid-sperms. C) Spermatid-spermatocyte-spermatogonia-sperms. D) Spermatocyte-spermatogonia-spermatid-sperms. Show Answer Correct Answer: B) Spermatogonia-spermatocyte-spermatid-sperms. 4. The reproductive cycle of a human is usually regulated by A) A) sex cells. B) B) hormones. C) C) natural selection. D) None of the above. Show Answer Correct Answer: B) B) hormones. 5. Spermiation is the process of the release of sperms from: A) Seminiferous tubule. B) Vasdeferens. C) Epididymis. D) Prostate gland. Show Answer Correct Answer: A) Seminiferous tubule. 6. What are ovaries? A) The male reproductive organs that produce sperm and hormones. B) The female reproductive organs that produce eggs (ova) and hormones such as estrogen and progesterone. C) The organs responsible for digestion in females. D) The glands that regulate metabolism in the body. Show Answer Correct Answer: B) The female reproductive organs that produce eggs (ova) and hormones such as estrogen and progesterone. 7. In human beings, after one month of pregnancy, the embryo's ..... organ is formed. A) Brain. B) Heart. C) Lungs. D) Kidney. Show Answer Correct Answer: B) Heart. 8. Which two processes are included in the prenatal development of a single human embryo? A) Gastrulation and differentiation. B) Menopause and cleavage. C) Puberty and gastrulation. D) Menstruation and fertilization. Show Answer Correct Answer: A) Gastrulation and differentiation. 9. Estrogen has a direct effect on the A) Formation of a zygote. B) Movement of an egg toward the sperm. C) Development of a placenta within the ovary. D) Changes within the uterus. Show Answer Correct Answer: D) Changes within the uterus. 10. Non-identical twins can occur when: A) Two sperm cells fertilise an egg cell. B) A fertilised egg cell splits into two cells. C) Two egg cells are fertilised. D) Two ovaries are fertilised. Show Answer Correct Answer: C) Two egg cells are fertilised. 11. Eggs are released into the: A) Ovary. B) Uterus. C) Fallopian tube. D) Vagina. Show Answer Correct Answer: C) Fallopian tube. 12. These hormones are secreted only in a pregnant female A) Oxytocin, vasopressin, HPL. B) Relaxin, HCG, HPL. C) HPL, HCG, progesterone. D) HPL, HCG, oxytocin. Show Answer Correct Answer: B) Relaxin, HCG, HPL. 13. How many second polar bodies has produced by a 45 years virgin female in her life:- A) 480. B) 90. C) 45. D) 0. Show Answer Correct Answer: D) 0. 14. Stem cells are ..... A) Specialied cells that have the potential to differentiate. B) Cells that are fully developed. C) The second option is the correct one. D) Unspecialized cells that have the potential to differentiate. Show Answer Correct Answer: D) Unspecialized cells that have the potential to differentiate. 15. The male reproductive system produces sex hormone called A) 0estrogen. B) Progesterone. C) Testosterone. D) Andresterone. Show Answer Correct Answer: C) Testosterone. 16. The other name of follicular cells A) Granulosa cells. B) Graffian cells. C) Corona radiata. D) Luteal cells. Show Answer Correct Answer: A) Granulosa cells. 17. A gamete is a cell that: A) Is found in the brain after puberty. B) Causes puberty. C) Is only made in a female's ovaries. D) Allows an organism to reproduce. Show Answer Correct Answer: D) Allows an organism to reproduce. 18. What is the periodic shedding of tissues and blood from the inner lining of theuterus? A) Pregnancy. B) Ovulation. C) Menstruation. D) Menopause. Show Answer Correct Answer: C) Menstruation. 19. What is the important role of the scrotum in the system? A) It is a muscular tube that transport fluids. B) It is the gland that produces sperm and seminal fluids. C) It is a sperm pouch-like sac that regulates the temperature of the testes. D) It is a long coil that caries semen and urine to urethra. Show Answer Correct Answer: C) It is a sperm pouch-like sac that regulates the temperature of the testes. 20. The fetus develops in the: A) Cervix. B) Fallopian tube. C) Perineum. D) Uterus. Show Answer Correct Answer: D) Uterus. 21. Which is not a specific example of a secondary sexual characteristic A) Voice deepens. B) Sperm production. C) Pubic hair develops. D) Hormone production. Show Answer Correct Answer: D) Hormone production. 22. Fusion of sperm and egg nucleus A) Karyogenesis. B) Amphimixis. C) Karyogamy. D) Amphigenesis. Show Answer Correct Answer: C) Karyogamy. 23. Stage of embryo development at which implantation occurs in human female is A) Morula. B) Zygote. C) Blastocyst. D) Transient 3-celled stage. Show Answer Correct Answer: C) Blastocyst. 24. How many chromosomes does a zygote have? A) Half. B) 23. C) 46. D) 42. Show Answer Correct Answer: C) 46. 25. Abdominal passage which connects abdominal cavity with the scrotal sac in mammals is known as A) Haversian canal. B) Spermatic canal. C) Neurenteric canal. D) Inguinal canal. Show Answer Correct Answer: D) Inguinal canal. 26. Menstruation is the passing of ..... A) An egg. B) Blood. C) Unfertilised egg. D) None of the above. Show Answer Correct Answer: C) Unfertilised egg. 27. What is the purpose of the amniotic fluid? A) Helps diffusion of oxygen. B) Keeps embryo wet. C) Stops embryo getting damaged. D) Keeps embryo respiring anaerobically. Show Answer Correct Answer: C) Stops embryo getting damaged. 28. Which of these BEST describes the end results of mitosis? A) 2 identical cells created. B) 4 identical cells created. C) 2 unique cells created. D) 4 unique cells created. Show Answer Correct Answer: A) 2 identical cells created. 29. When the baby is ready to be born, the mother goes into ..... A) Pregnancy. B) Menstruation. C) Menopause. D) Labour. Show Answer Correct Answer: D) Labour. 30. The skin covered sac that surround the testes is the A) Scrotum. B) Prostate gland. C) Cowper's gland. D) Seminal vesicles. Show Answer Correct Answer: A) Scrotum. 31. The egg cell(ova) and the sperm cell are the reproductive cells needed to create a human. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 32. Male organ that allows a male to pass semen and urine from his body. A) Vas Deferens. B) Penis. C) Urethra. D) Testicles. Show Answer Correct Answer: B) Penis. 33. Exponential growth cannot continue for long because of ..... , all those environmental conditions such as limited food, etc A) Deceleration. B) Environmental resistance. C) Logistic growth. D) Biotic potential. Show Answer Correct Answer: B) Environmental resistance. 34. The process of transfer of sperms into the female reproductive tract is known as A) Insemination. B) Gametogenesis. C) Fertilization. D) Implantation. Show Answer Correct Answer: A) Insemination. 35. Which part of the ovary in mammals acts as an endocrine gland after ovulation? A) Germinal epithelium. B) Stroma. C) Graafian follicle. D) None of the above. Show Answer Correct Answer: C) Graafian follicle. 36. Preperation of sperm before penetration of ovum is A) Spermiation. B) Coition. C) Insemination. D) Capacitation. Show Answer Correct Answer: D) Capacitation. 37. Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female? A) Retention of well-developed corpus luteum. B) Maintenance of high concentration of sex-hormones in the blood stream. C) Maintenance of the hypertrophical endometrial lining. D) Fertilisation of the ovum. Show Answer Correct Answer: B) Maintenance of high concentration of sex-hormones in the blood stream. 38. The process of delivery of the foetus (childbirth) is called A) Ejection. B) Micturition. C) Egestion. D) Parturition. Show Answer Correct Answer: D) Parturition. 39. The region where fertilisation occurs A) Infundibulum. B) Ovary. C) Vagina. D) Ampulla-isthmic junction. Show Answer Correct Answer: D) Ampulla-isthmic junction. 40. The animal's digestive tract forms from the ..... A) Mesoderm. B) Ecotoderm. C) Endoderm. D) Protostome. Show Answer Correct Answer: C) Endoderm. 41. The reproductive structure in a female mammal that produces sex cells is the A) Placenta. B) Uterus. C) Testes. D) Ovary. Show Answer Correct Answer: D) Ovary. 42. For a human zygote to become an embryo, it must undergo A) Meiosis. B) Mitosis. C) Fertilization. D) Recombination. Show Answer Correct Answer: B) Mitosis. 43. Assertion:Sertoli cells are present inside seminiferous tubules. Reason:Sertoli cells secrete androgens. A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is not the correct explanation of A. C) A is true but R is false. D) A is false but R is true. Show Answer Correct Answer: C) A is true but R is false. 44. Fertilisation is when an egg cell nucleus fuses with: A) A body cell nucleus. B) A sperm cell nucleus. C) Another egg cell nucleus. D) Root hair cells. Show Answer Correct Answer: B) A sperm cell nucleus. 45. WHICH PART OF THE SPERM HELPS IN RUPTURE OF ZONA PELLUCIDA LAYER OF OVUM? A) MIDDLE PIECE. B) ACROSOME. C) TAIL. D) NUCLEUS. Show Answer Correct Answer: B) ACROSOME. 46. Sperms are produced in: A) Prostate glands. B) Vasdeferens. C) Seminiferous tubule. D) Interstitial cells. Show Answer Correct Answer: C) Seminiferous tubule. 47. The female sex cell is the A) Zygote. B) Fetus. C) Sperm cell. D) Egg cell. Show Answer Correct Answer: D) Egg cell. 48. Cleavage in the fertilized egg of humans A) Start in uterus. B) Is meroblastic. C) Starts when egg is in fallopian tube. D) Is discoidal. Show Answer Correct Answer: C) Starts when egg is in fallopian tube. 49. Urethral meatus is ..... A) Part of internal genetilia. B) Endocrine gland. C) External muscle. D) External opening. Show Answer Correct Answer: D) External opening. 50. In the correct chronological order, the three phases of the ovarian cycle are A) Follicular, luteal, secretory. B) Follicular, ovulation, luteal. C) Menstrual, proliferative, secretory. D) Menstrual, ovulation, luteal. Show Answer Correct Answer: B) Follicular, ovulation, luteal. 51. Select the correct option describing gonadotropin activity in a normal pregnant female: A) High level of FSH and LH stimulates the thickening of endometrium. B) High level of FSH and LH facilitate implantation of the embryo. C) High level of hCG stimulates the synthesis of estrogen and progesterone. D) High level of hCG stimulates the thickening of endometrium. Show Answer Correct Answer: C) High level of hCG stimulates the synthesis of estrogen and progesterone. 52. Preparation of sperm before penetration of ovum is A) Capacitation. B) Spermiation. C) Cortical reaction. D) Spermiogenesis. Show Answer Correct Answer: A) Capacitation. 53. Human spermatozoa have to spend several hours in the female genital tract before they can fertilize an oocyte. During this time, they are activated in a process called A) Conception. B) Capacitation. C) Ejaculation. D) Copulation. Show Answer Correct Answer: B) Capacitation. 54. The persistence of corpus luteum during pregnancy is due to presence of harmone A) LH. B) CHRONIONIC GONADOTROPIN. C) TESTOSTERONE. D) FSH. Show Answer Correct Answer: B) CHRONIONIC GONADOTROPIN. 55. After the follicle has released the egg cell, what does it become? A) Corpas lutuem. B) Corpus lutuem. C) Corpas luteum. D) Corpus luteum. Show Answer Correct Answer: D) Corpus luteum. 56. In human females meiosis-2 is not completed untill A) Birth. B) Puberty. C) Fertlization. D) Uterine implantation. Show Answer Correct Answer: C) Fertlization. 57. What does the IVF consist of? A) Injection semen in the uterus. B) Inject a sperm cell in a egg. C) All the above. D) None of the above. Show Answer Correct Answer: B) Inject a sperm cell in a egg. 58. Can the human embryo obtain nutrients and remove waste substances as the human adults do? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 59. Transfer of sperms from the male reproductive tract to female reproductive tract by penis is called ..... A) Insemination. B) Spermiation. C) All the above. D) None of the above. Show Answer Correct Answer: A) Insemination. 60. The genetic material in a zygote results from the combination of the genetic materials ..... A) Of the sperm and the egg. B) Of the bacteria. C) Both answers are correct. D) No answer is correct. Show Answer Correct Answer: A) Of the sperm and the egg. ← 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books