This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 3 Human Reproduction – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Puberty is caused by an increased production of A) Gametes. B) Sex cells. C) DNA. D) Hormones. Show Answer Correct Answer: D) Hormones. 2. Chromosomes no. is halved during A) Formation of first polar body. B) Formation of second polar body. C) Meiosis-2. D) Division od secondry oocyte. Show Answer Correct Answer: A) Formation of first polar body. 3. The muscular passageway leading to the outside of the body in the female reproductive system is the A) Uterus. B) Vagina. C) Cervix. D) Fallopian tube. Show Answer Correct Answer: B) Vagina. 4. What is the most common sign of pregnancy? A) Nausea and vomiting. B) Feeling more hungry than normal. C) Headaches and backaches. D) Not getting a period. Show Answer Correct Answer: D) Not getting a period. 5. What is considered as the ovulation day for regular menstrual cycle? A) 1st day. B) 7th day. C) 14th day. D) 28th day. Show Answer Correct Answer: C) 14th day. 6. Bartholin's gland are situated (2003) A) On the sides of the head of some amphibians. B) At the reduced tail end of birds. C) On either side of vagina in humans. D) On either side of vas defrens in humans. Show Answer Correct Answer: C) On either side of vagina in humans. 7. The ..... is a sac of tissues that holds the testes. A) Vagina. B) Scrotum. C) Epidydymus. D) Testicles. Show Answer Correct Answer: B) Scrotum. 8. The stage in humans when our body undergoes changes that make us sexually mature. A) Old age. B) Adolescent. C) Puberty. D) Retirement. Show Answer Correct Answer: C) Puberty. 9. What are the specialised sex cells called in sexual reproduction? A) Zygotes. B) Gametes. C) Ovaries. D) Embryos. Show Answer Correct Answer: B) Gametes. 10. Define the term implantation A) The fusion of male and female gametes to form a zygote. B) A chemical substance produced by the body to control the activity of cells and organs. C) A method of fertilisation without sexual intercourse. D) When the embryo embeds itself into the thickened lining of the uterus. Show Answer Correct Answer: D) When the embryo embeds itself into the thickened lining of the uterus. 11. An organism that has two different alleles for a trait A) Homozygous. B) Heterozygous. C) Codominance. D) Punnett Square. Show Answer Correct Answer: B) Heterozygous. 12. The release of sperm from the the seminiferous tubules is called A) Spermiogenesis. B) Spermiation. C) Spermatogenesis. D) Gametogenesis. Show Answer Correct Answer: B) Spermiation. 13. During a vasectomy, the ducts responsible for transporting sperm are cut and tied off. What is the name of these ducts? A) The testis. B) The seminal vesicles. C) The vas deferens. D) The prostate. Show Answer Correct Answer: C) The vas deferens. 14. What could happen if a woman releases two eggs at once? A) Non-identical twins. B) Identical twins. C) This cannot occur naturally. D) Semi-identical twins. Show Answer Correct Answer: A) Non-identical twins. 15. In vitro ferilisation is a technique that involves transfer of which one of the following into the fallopian tube? A) Embryo of 32 cell stage. B) Zygote only. C) Either zygote or early embryo upto 8 cell stage. D) Embryo only, upto 8 cell stage. Show Answer Correct Answer: C) Either zygote or early embryo upto 8 cell stage. 16. Reproductive organs that produce eggs and hormones A) Cervix. B) Vagina. C) Ovaries. D) None of the above. Show Answer Correct Answer: C) Ovaries. 17. TRUE or FLASE:Reproduction is possible for boys and girls before puberty A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. Basic unit or building block of life. A) Tissue. B) Organ. C) Cell. D) Placenta. Show Answer Correct Answer: C) Cell. 19. What is the main reproductive organ in males? What hormone does it secrete? A) Testes:Oestrogen. B) Testes:Testosterone. C) Ovaries:Oestrogen. D) Ovaries:Testosterone. Show Answer Correct Answer: B) Testes:Testosterone. 20. Most important hormone in post ovulatory phase: A) Progesterone. B) Estrogen. C) HCG. D) FSH. Show Answer Correct Answer: A) Progesterone. 21. Testosterone directly affects the A) Formation of a zygote. B) Production of sperm cells. C) Changes within an ovary. D) Development of a placenta. Show Answer Correct Answer: B) Production of sperm cells. 22. Name the antibody which present in milk A) IgG. B) IgM. C) IgA. D) IgD. Show Answer Correct Answer: C) IgA. 23. Most sexually transmitted infections can be prevented by A) Using IUD. B) Using spermicide gel. C) Using condoms during sex. D) Using diaphragm. Show Answer Correct Answer: C) Using condoms during sex. 24. The scientific term for the shedding of the endometrium is: A) Implantation. B) Fertilisation. C) Menstruation. D) Ovulation. E) Copulation. Show Answer Correct Answer: C) Menstruation. 25. What hormone promotes secondary sexual characteristics in females? A) Testosterone. B) Oestrogen. C) Progesterone. D) Oxytocin. Show Answer Correct Answer: B) Oestrogen. ← PreviousNext →Related 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 6Class 12 Biology Chapter 3 Human Reproduction Quiz 7Class 12 Biology Chapter 3 Human Reproduction Quiz 8Class 12 Biology Chapter 3 Human Reproduction Quiz 9Class 12 Biology Chapter 3 Human Reproduction Quiz 10Class 12 Biology Chapter 3 Human Reproduction Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books