This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 3 Human Reproduction – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is implantation? A) The embedding of the embryo into the lining of the endometrium. B) The implanting of the sperm into the egg. C) The embedding of the placenta into the uterus. D) None of the above. Show Answer Correct Answer: A) The embedding of the embryo into the lining of the endometrium. 2. What hormone(s) are responsible for the growth and maturation of the follicle into a mature ovum? A) Estrogen. B) Progesterone & estrogen. C) FSH & LH. D) FSH only. Show Answer Correct Answer: D) FSH only. 3. What is the function of the penis in human reproduction? A) Where sperm are produced. B) Where sperm pass through and liquid is added. C) Where semen is ejaculated from. D) Where the egg travels along to be fertilised. Show Answer Correct Answer: C) Where semen is ejaculated from. 4. In which of the following structures of the female human reproductive system is the zygote implanted during normal human development? A) Ovary. B) Uterus. C) Vagina. D) Amniotic sac. Show Answer Correct Answer: B) Uterus. 5. Which of the following stages starts the process of embryonic development? (a) A) Fertilization. B) Implanation. C) Menstruation. D) A. ovulation. Show Answer Correct Answer: D) A. ovulation. 6. What is the role of the utertus? A) To bring a magical child from the nether realm. B) To provide the fertilized egg with nutrients and give the egg space to grow into a child. C) To stop sperm from fertilizing an egg. D) To enhance a sperm. Show Answer Correct Answer: B) To provide the fertilized egg with nutrients and give the egg space to grow into a child. 7. Eggs and 100 sperms can be produced from ..... meiotic divisions respectively A) 100, 100. B) 100, 25. C) 25, 25. D) 25, 100. Show Answer Correct Answer: B) 100, 25. 8. The ducts from ampulla through which the milk is sucked out A) Lactiferous. B) Oviduct. C) Vas deferens. D) Seminiferous tubules. Show Answer Correct Answer: A) Lactiferous. 9. During puberty, ..... grows under the arms and pubic areas. A) Glands. B) Sweat. C) Hormones. D) Hair. Show Answer Correct Answer: D) Hair. 10. In the human species, fertilisation normally occurs in: A) The fallopian tubes. B) The cervix. C) The uterus. D) None of the above. Show Answer Correct Answer: A) The fallopian tubes. 11. Gestation period is human beings is approximately A) 365 days. B) 280 days. C) 100 days. D) 150 days. Show Answer Correct Answer: B) 280 days. 12. Determine which of the following statement about oogenesis that is true. A) Primary oocyte are haploid. B) Meiosis is completed prior to ovulation. C) In ovulation, secondary oocytes are released from Graafian follicle. D) Oogonia form continuously during post natal life. Show Answer Correct Answer: C) In ovulation, secondary oocytes are released from Graafian follicle. 13. Which organ helps maintain the homeostasis of the sperm? A) Testes. B) Vas Deferens. C) Scrotum. D) Prostate Gland. Show Answer Correct Answer: C) Scrotum. 14. Egg is liberated from ovary and enters the Fallopian tube in A) Secondary oocyte stage. B) Primary oocyte stage. C) Oogonial stage. D) Mature ovum stage. Show Answer Correct Answer: A) Secondary oocyte stage. 15. Most of the skeleton of a human embryo is composed of connective tissue known as A) Cartilage. B) Tendons. C) Ligaments. D) Bone. Show Answer Correct Answer: A) Cartilage. 16. Which process normally occurs at the placenta? A) Oxygen diffuses from the fetal blood to the maternal blood. B) Materials are exchanged between fetal and maternal blood. C) Maternal blood is converted into fetal blood. D) Digestive enzymes pass from maternal blood to fetal blood. Show Answer Correct Answer: B) Materials are exchanged between fetal and maternal blood. 17. Condoms are one of the most popular contraceptives because of the following reasons. A) These are effective barriers for insemination. B) They do not interfere with coital act. C) These help in reducing the risk of STDs. D) All of the above. Show Answer Correct Answer: D) All of the above. 18. How many chromosomes in a sperm cell? A) 23. B) 26. C) 43. D) 46. Show Answer Correct Answer: A) 23. 19. If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from: A) Testes to epididymis. B) Epididymis to vas deferencs. C) Ovary to uterus. D) Vagina to uterus. Show Answer Correct Answer: A) Testes to epididymis. 20. The human female reproductive cycle is regulated primarily by the A) White blood cells of the circulatory system. B) Muscle cells of the skeletal system. C) Enzymes of the digestive system. D) Hormones of the endocrine system. Show Answer Correct Answer: D) Hormones of the endocrine system. 21. Which statement best explains the endocrine system's role in reproduction? A) Regulates digestive enzymes for nutrient absorption. B) Controls reproductive hormones affecting development. C) Pumps oxygen into reproductive organs directly. D) Filters toxins from fetal circulation only. Show Answer Correct Answer: B) Controls reproductive hormones affecting development. 22. Temperature in scrotum necessary for sperm formation should be A) 1) 2$^{0}$C above body temperature. B) 2$^{0}$C to 2.5$^{0}$C below body temperature. C) 8$^{0}$C above body temperature. D) 8$^{0}$C below body temperature. Show Answer Correct Answer: B) 2$^{0}$C to 2.5$^{0}$C below body temperature. 23. Which of the following hormones is directly responsible for the release of the ova from the ovary? A) Oestrogen. B) Progesterone. C) Luteinizing hormone. D) Follicle-stimulating hormone. Show Answer Correct Answer: C) Luteinizing hormone. 24. Cryptorchidism is a condition where A) One or both testes are not formed. B) One or both testes fail to descend into the scrotum. C) One of both testes are not developed. D) None of the above. Show Answer Correct Answer: B) One or both testes fail to descend into the scrotum. 25. Where is the genetic material (DNA) located in the spermatozoa? 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. ← 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 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 10Class 12 Biology Chapter 3 Human Reproduction Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books