This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 3 Human Reproduction – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The immature male germ cell undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above. A) Spermatogonia have 46 .chromosomes and always undergo meiotic cell division. B) Primary spermatocytes divide by mitotic cell division. C) Secondary spermatocytes have 23 chromosomes and undergo second meiotic division. D) Spermatozoa are transformed into spermatids. E) Idk, bhaghwan gane. Show Answer Correct Answer: C) Secondary spermatocytes have 23 chromosomes and undergo second meiotic division. 2. Monthly occurence in which an egg is released into the uterus to be prepared for fertilized. If not fertilized, the lining of uterus is shed A) Estrogen. B) Menstrual Cycle. C) Vagina. D) Uterus. Show Answer Correct Answer: B) Menstrual Cycle. 3. What is the function of the umbilical cord? A) To regulate the menstrual cycle. B) To connect the foetus to the placenta. C) To produce sperm. D) To produce ova. Show Answer Correct Answer: B) To connect the foetus to the placenta. 4. An endocrine gland does which of the following? A) Secretes substances produced into ducts (tubes) for transport. B) Secretes substances produced straight into the blood for transport. C) Secretes no substances at all. D) None of the above. Show Answer Correct Answer: B) Secretes substances produced straight into the blood for transport. 5. During puberty, girls will begin to have 'periods' which is called ..... A) Natural. B) Blood. C) Menstruation. D) None of the above. Show Answer Correct Answer: C) Menstruation. 6. An endocrine gland formed in the ovary after ovulation is A) Endometrium. B) Corpus luteum. C) Blastula. D) None of the above. Show Answer Correct Answer: B) Corpus luteum. 7. Spermatogenesis involves ..... A) Mitosis only. B) Meiosis only. C) Mitosis followed by meiosis. D) None of the above. Show Answer Correct Answer: C) Mitosis followed by meiosis. 8. Identify the product formed during oogenesis from one diploid cell A) One functional eggs and three polar bodies. B) Two functional eggs and two polar bodies. C) Four functional polar bodies. D) Four functional eggs. Show Answer Correct Answer: A) One functional eggs and three polar bodies. 9. Which of the following phases of the menstrual cycle is of shortest duration? A) Menstrual phase. B) Luteal phase. C) Follicular phase. D) Ovulatory phase. Show Answer Correct Answer: D) Ovulatory phase. 10. Identify the hormone that causes the development of secondary sexual characteristics in females A) Progesterone. B) LH. C) Oestrogen. D) Testosterone. Show Answer Correct Answer: C) Oestrogen. 11. Fallopian tube consists of:A. IsthmusB. CervixC. AmpullaD. Infundibulum A) A, C, D. B) A, B, C. C) A, B, C, D. D) A, B. Show Answer Correct Answer: A) A, C, D. 12. Which statement about the functioning of the human reproductive system is correct? A) A) Testes produce unfertilized eggs andrelease them so that they can be fertilizedby sperm. B) B) Ovaries are where male gametes undergomeiosis to reduce their chromosomenumber. C) C) The uterus is where the fetus developsinternally until birth. D) None of the above. Show Answer Correct Answer: C) C) The uterus is where the fetus developsinternally until birth. 13. In correct chronological order, the three phases of the human ovarian cycle are: A) Menstrual $\rightarrow$ proliferative $\rightarrow$ secretory. B) Follicular $\rightarrow$ ovulation $\rightarrow$ luteal. C) Menstrual $\rightarrow$ ovulation $\rightarrow$ luteal. D) Follicular $\rightarrow$ luteal $\rightarrow$ secretory. Show Answer Correct Answer: B) Follicular $\rightarrow$ ovulation $\rightarrow$ luteal. 14. Before birth, human babies receive their nutrition from their mother through the A) Amniotic sac. B) Gestational fluid. C) Umbilical cord. D) Stomach tissue. Show Answer Correct Answer: C) Umbilical cord. 15. Determine the structure found in the discharge of menstruation A) Endometrium of uterus. B) Myometrium of uterus. C) Graafian follicle. D) Corpus luteum. Show Answer Correct Answer: A) Endometrium of uterus. 16. In human males, the paired testes are external to the body cavity because A) This allows for easier transport of sperms to the urethra. B) They are too large to be accommodated inside the body. C) They contain the prostate gland which secretes seminal fluid. D) They contain the sperm which need a cooler temperature to remain viable. Show Answer Correct Answer: D) They contain the sperm which need a cooler temperature to remain viable. 17. What is the function of the placenta? A) Passes nutrients to the baby form the mother. B) It is the fluid that protects the baby. C) The placenta is tissue that passes nutrients and oxygen into the baby via umbilical cord and removes carbon dioxide and urea from the baby. D) The baby. Show Answer Correct Answer: C) The placenta is tissue that passes nutrients and oxygen into the baby via umbilical cord and removes carbon dioxide and urea from the baby. 18. What is the name of the structure in the ovary where the egg is released from? A) Tube. B) Pouch. C) Follicle. D) Sac. Show Answer Correct Answer: C) Follicle. 19. What is the main function of the ovaries in the female reproductive system? A) Produce eggs and sex hormones. B) Store eggs. C) Transport eggs to the uterus. D) Filter blood. Show Answer Correct Answer: A) Produce eggs and sex hormones. 20. Why does your voice change A) Testosterone makes your voice box stretch. B) Testosterone makes your voice box grow. C) You hit your throat and it hurts. D) Testosterone (pronounced:tes-TAHS-tuh-rone), makes your voice box or larynx shrink. Show Answer Correct Answer: B) Testosterone makes your voice box grow. 21. Secretion of milk from the mammary gland towards the end of the pregnancy is called ..... A) Parturition. B) Implantation. C) Fertilization. D) Lactation. Show Answer Correct Answer: D) Lactation. 22. Repair of endometrium is undertaken by A) FSH. B) Estrogen. C) LH. D) Prolactin. Show Answer Correct Answer: B) Estrogen. 23. A woman usually releases eggs at the rate of A) Twelve times a year. B) One every twenty-eight days. C) Once every nine months. D) One every fourteen days. Show Answer Correct Answer: B) One every twenty-eight days. 24. What is the name of the organ where the embryo develops? A) Lung. B) Brain. C) Stomach. D) Uterus. Show Answer Correct Answer: D) Uterus. 25. Assertion:During pregnancy, the levels of hormones like estrogens and progesterone are increased. Reason:The increased production of these hormones is essential for supporting fetal growth. 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: A) Both A and R are true and R is the correct explanation of A. 26. The birth canal is also called the A) Uterus. B) Vagina. C) Fallopian tubes. D) Cervix. Show Answer Correct Answer: B) Vagina. 27. True / False-Nervous System messages are faster acting than those carried by hormones A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 28. Where are the sperm cells released during mating? A) Ovaries. B) Uterus. C) Fallopian tube. D) Vagina. Show Answer Correct Answer: D) Vagina. 29. What cells secrete testosterone? A) Spermatids. B) Sertoli cells. C) Leydig cells. D) Spermatocytes. Show Answer Correct Answer: C) Leydig cells. 30. Where is the genetic material (DNA) located in a sperm? A) In the head. B) In the tail. C) In the middle piece. D) None of the above. Show Answer Correct Answer: A) In the head. 31. Which two hormones are produced in the pituitary gland and control egg maturation A) Estrogen and progesterone. B) FSH and estrogen. C) FSH and LH. D) LH and estrogen. Show Answer Correct Answer: C) FSH and LH. 32. What would be an artificial method of contraception? A) Contraceptive pill/A condom. B) Avoiding intercourse during the fertile period. C) All the above. D) None of the above. Show Answer Correct Answer: A) Contraceptive pill/A condom. 33. The pregnancy hormone A) Estrogen. B) Luteinizing hormone. C) Progesterone. D) Human chorionic gonadotropin. Show Answer Correct Answer: C) Progesterone. 34. Without fertilisation, the corpus luteum A) Gets bigger. B) Evolves. C) Disintegrates. D) None of the above. Show Answer Correct Answer: C) Disintegrates. 35. After the sperm has fused with the egg and entered, what events take place? A) The pronuleus of the male and female fuse completing the process of fertilization. B) The pronuleus of the male and female separate completing the process of fertilization. C) Cilia pull zygote towards infundibulum. D) Cilia pull sperm towards infundibulum. Show Answer Correct Answer: A) The pronuleus of the male and female fuse completing the process of fertilization. 36. The overall physical changes that occur in male and female bodies during puberty are called A) Adolescent syndrome. B) Premenstrual syndrome. C) Estrogen and testosterone. D) Secondary sex characteristics. Show Answer Correct Answer: D) Secondary sex characteristics. 37. The sex of a baby is determined by: A) Hormone levels at the time of conception. B) Chromosomes provided by the sperm. C) Chromosome provided by the ovum. D) The size of the sperm that fertilized the ovum. Show Answer Correct Answer: B) Chromosomes provided by the sperm. 38. What is the safest amount of alcohol to consume during pregnancy? A) 0.01%. B) Does not matter. C) Up to the mother. D) None. Show Answer Correct Answer: D) None. 39. Breast milk contains nutrients and: A) Formula. B) Amniotic fluid. C) Mashed up food. D) Antibodies. Show Answer Correct Answer: D) Antibodies. 40. Which organ is correctly paired with its function? A) Uterus serves as site of implantation of the embryo. B) Penis serves as site of semen formation. C) Testis produces follicle stimulating hormone. D) Fallopian tube produces the egg. Show Answer Correct Answer: A) Uterus serves as site of implantation of the embryo. 41. What are the female gonads? A) Testes. B) Ovaries. C) Menstruation. D) Eggs. Show Answer Correct Answer: B) Ovaries. 42. Which precautions should be taken to prevent the spread of HIV? 1) avoidance of direct skin contact 2) wearing gloves when treating patients 3) not sharing soap with another 4) prevent exchange of body fluids 5) treatment of blood to destroy virus A) 1, 2 and 3. B) 1, 3 and 4. C) 2, 3 and 5. D) 2, 4 and 5. Show Answer Correct Answer: D) 2, 4 and 5. 43. Spermatogenesis is induced by A) ATH. B) STH. C) ICSH. D) FSH. Show Answer Correct Answer: D) FSH. 44. TRUE or FLASE:Rapid growth in height and weight is very evident during adolescence A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 45. The phase of menstrual cycle in humans that last for 7-8 days, is A) Menstruation. B) Follicular phase. C) Ovulatory phase. D) Luteal phase. Show Answer Correct Answer: B) Follicular phase. 46. Which is not part of the reproductive system? A) Anus. B) Cervix. C) Uterus. D) Prostate Gland. Show Answer Correct Answer: A) Anus. 47. How many months does it typically take for a fetus to fully develop? A) 7 months. B) 9 months. C) 10 months. D) One year. Show Answer Correct Answer: B) 9 months. 48. The testes are located outside the body in an external sac called this A) Scrotum. B) Epididymis. C) Vas deferens. D) Prostate. Show Answer Correct Answer: A) Scrotum. 49. Although all the body cells in an animal contain the same hereditary information, they do not all look and function the same way. Which step of differentiation causes this to occur? A) Embryonic cells use different portions of their genetic information. B) Embryonic cells delete portions of chromosomes. C) The number of genes increases as embryonic cells move to new locations. D) Genes in embryonic body cells mutate rapidly. Show Answer Correct Answer: A) Embryonic cells use different portions of their genetic information. 50. Why shouldn't the mother smoke and drink during pregnancy? A) It can harm the developing fetus. B) It damages the placenta and baby doesn't get any nutrients. C) It damages the umbilical cord. D) It stops the menstrual cycle. Show Answer Correct Answer: A) It can harm the developing fetus. 51. Which statement regarding the size of male and female sex cells is correct? A) Male sex cell is smaller than the female sex cell. B) Female sex cell is smaller than the male sex cell. C) Male and female sex cells are of equal size. D) None of the above. Show Answer Correct Answer: A) Male sex cell is smaller than the female sex cell. 52. A fertilised egg is called a: A) Zygote. B) Fetus. C) Egg. D) Embryo. Show Answer Correct Answer: A) Zygote. 53. The secretory phase in the human menstrual cycle is also called: A) Luteal phase and lasts forabout 6 days. B) Follicular phase and lastsfor about 13 days. C) Luteal phase and lasts for about 13 days. D) Follicular phase and lasts for about 6 days. Show Answer Correct Answer: C) Luteal phase and lasts for about 13 days. 54. Female organ in which egg cells and sex hormones are produced A) Cervix. B) Ovary. C) Fallopian Tube. D) Uterus. Show Answer Correct Answer: B) Ovary. 55. Fertilization of sperm and ovum take place A) Ampulla of oviduct. B) None of the above. C) Isthmus of oviuct. D) Fimbriae of oviduct. Show Answer Correct Answer: A) Ampulla of oviduct. 56. Zygote is implnated in uterus as A) Gastrula. B) Morula. C) Blastocyst. D) Blastomere. Show Answer Correct Answer: C) Blastocyst. 57. The human embryo, with 8 to 16 blastomere is called A) Morula. B) Gastrula. C) Foetus. D) Blastula. Show Answer Correct Answer: A) Morula. 58. The only external part of the clitoris is called the A) Glans clitoris. B) Vulva. C) Crus clitoris. D) Corpus cavernosum. Show Answer Correct Answer: A) Glans clitoris. 59. Removal of a segment surgically and ligation of cut ends of vas deferens is known as- A) Gonadectomy. B) Tubectomy. C) Vasectomy. D) Castration. Show Answer Correct Answer: C) Vasectomy. 60. Scrotal sacs of man are connected with the abdominal cavity by A) Spermatic canal. B) Haversian canal. C) Rete testis. D) Inguinal canal. Show Answer Correct Answer: D) Inguinal canal. ← 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