This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 3 Human Reproduction – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 34 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Toxins can harm a developing fetus. They usually enter thefetus by the process of A) Recombination of genes from the fetus and mother. B) Active transport from the ovary. C) Diffusion across placental membranes. D) Blood flow from the mother to the fetus. Show Answer Correct Answer: C) Diffusion across placental membranes. 2. Which of the following is not a part of male reproductive organ? A) Sperm duct. B) Penis. C) Scrotum. D) Ovary. Show Answer Correct Answer: D) Ovary. 3. Which of the following is a correct sequence of cells in spermatogenesis? A) Spermatogonium $\rightarrow$ secondary spermatocyte $\rightarrow$ primary spermatocyte. B) Primary spermatocyte $\rightarrow$ spermatogonium $\rightarrow$ secondary spermatocyte. C) Spermatogonium $\rightarrow$ primary spermatocyte $\rightarrow$ secondary spermatocyte. D) None of the above. Show Answer Correct Answer: C) Spermatogonium $\rightarrow$ primary spermatocyte $\rightarrow$ secondary spermatocyte. 4. The membranous cover of the ovum at ovulation is: A) Corona radiata. B) Zona radiata. C) Zona pellucida. D) Chorion. Show Answer Correct Answer: C) Zona pellucida. 5. Twins that are formed when two eggs are fertilized by two different sperm cells are called A) Identical twins. B) Fratenal twins. C) Multple twins. D) Twins. Show Answer Correct Answer: B) Fratenal twins. 6. Breakdown of endometrial lining of the uterus takes place during A) Menstrual Phase. B) Follicular Phase. C) Luteal Phase. D) Ovulation. Show Answer Correct Answer: A) Menstrual Phase. 7. Which of the following statements about human reproduction is not correct? A) Implantation is the embedding of an embryo into the uterine lining. B) Fertilization is the release of semen through the penis. C) Scrotum is a sac holding the testes. D) Sperms are male gametes. Show Answer Correct Answer: B) Fertilization is the release of semen through the penis. 8. When does sperm production stop? A) Around age 50. B) Around puberty. C) Never. D) None of the above. Show Answer Correct Answer: C) Never. 9. Seminal Vesicle A) Male. B) Female. C) All the above. D) None of the above. Show Answer Correct Answer: A) Male. 10. Fertilisation process takes place in ..... A) Vagina. B) Ovum. C) Ovary. D) Fallopian tube. Show Answer Correct Answer: D) Fallopian tube. 11. What organelles are abundant in sperm cells to provide energy for flagellum movement? A) Ribosomes. B) Lysosomes. C) Enzymes. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 12. Physical and chemical changes in the egg cortex which occur after the sperm entry into the egg is called ..... A) Cortical reaction. B) Cleavage. C) Metamorphosis. D) Embryological changes. Show Answer Correct Answer: A) Cortical reaction. 13. In what system does the sex cells and urine pass through the same tube? A) Female. B) Male. C) All the above. D) None of the above. Show Answer Correct Answer: B) Male. 14. The tube that connects the ovaries to the uterus is called what? A) Sperm duct. B) Oviduct. C) Cervix. D) Egg tube. Show Answer Correct Answer: B) Oviduct. 15. Each secondary spermatocyte after second meiotic division produces A) Four haploid spermatids. B) Only one haploid spermatids. C) Two haploid spermatids. D) Two diploid spermatids. Show Answer Correct Answer: C) Two haploid spermatids. 16. Corpus luteum produces A) Estrogen. B) Testosterone. C) Progesterone. D) ENone of the above. Show Answer Correct Answer: C) Progesterone. 17. The correct term for the birth canal is A) Vagina. B) Vas deferens. C) Fallopian tubes. D) Urethra. Show Answer Correct Answer: A) Vagina. 18. What does the term infertile mean? A) An ability to produce offspring. B) A method of fertilisation without sexual intercourse. C) A method of fertilisation with sexual intercourse. D) An inability to produce offspring. Show Answer Correct Answer: D) An inability to produce offspring. 19. The change in the amount of yolk and its distribution in the egg will affect A) Fertilization. B) Formation of zygote. C) Pattern of cleavage. D) Number of Blastomeres produced. Show Answer Correct Answer: C) Pattern of cleavage. 20. Which type of intrauterine device (IUD) is available? A) Copper. B) Titanium. C) Hormonal. D) A and B. E) All of the above. Show Answer Correct Answer: C) Hormonal. 21. Which hormone level reach up to peak during luteal phase of menstrual cycle A) LH. B) FSH. C) Estrogen. D) Progesterone. Show Answer Correct Answer: A) LH. 22. On average, how long does menstruation/a period last? A) 5-6 days. B) 1-3 days. C) 9-12 days. D) 12-24 days. Show Answer Correct Answer: A) 5-6 days. 23. How long does an egg live after ovulation? A) 1 hour. B) 24 hours. C) 5 days. D) 28 days. Show Answer Correct Answer: B) 24 hours. 24. Identify the following stages of adolescence:Is more able to manage close and long-term sexual relationships A) EARLY adolescence. B) MIDDLE adolescence. C) LATE adolescence. D) None of the above. Show Answer Correct Answer: C) LATE adolescence. 25. Which changes occur at puberty to boys and girls A) Pubic hair grows. B) Underarm hair grows. C) Sexual organs grow and develop. D) All are correct. Show Answer Correct Answer: D) All are correct. ← 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 5Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books