This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 3 Human Reproduction – Quiz 59 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 59 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of these is not an important component of initiation of parturition in human? A) Release of oxytocin. B) Release of prolactin. C) Synthesis of prostaglandin. D) Increase in estrogen. Show Answer Correct Answer: B) Release of prolactin. 2. What is the uterus? A) A gland that produces hormones. B) The hollow muscular organ in which a fertilized egg implants and develops into a fetus. C) A type of blood vessel. D) The outer layer of the skin. Show Answer Correct Answer: B) The hollow muscular organ in which a fertilized egg implants and develops into a fetus. 3. All the cells in a newborn baby and the zygote have in common ..... A) They have the same DNA. B) They have the same size. C) They have the same weight. D) They are completely different. Show Answer Correct Answer: A) They have the same DNA. 4. Which is absent in human sperm? A) Nucleus. B) Mitochondria. C) Centrioles. D) Endoplasmic reticulum. Show Answer Correct Answer: D) Endoplasmic reticulum. 5. The period of Human embryo development in uterus is called ..... A) Embryogeny. B) Gestation. C) Implantation. D) None of the above. Show Answer Correct Answer: B) Gestation. 6. Complex organisms produce sex cells that unite during fertilization, forming a single cell known as a A) Embryo. B) Gonad. C) Gamete. D) Zygote. Show Answer Correct Answer: D) Zygote. 7. Ovulation in the human female normally takes place during the menstrual cycle(a) at the mind secretory phase(b) just before the end of the secretory phase(c) at the beginning of the proliferative phase(d) at the end of the proliferative phase. A) At the mind secretory phase. B) (b) just before the end of the secretory phase. C) (c) at the beginning of the proliferative phase. D) (d) at the end of the proliferative phase. Show Answer Correct Answer: D) (d) at the end of the proliferative phase. 8. An adult testes is oval in shape. Its width is about ..... and length is ..... respectively. A) 4-5 cm, 2-3 cm. B) 2-5 cm, 1-3 cm. C) 2-3 cm, 4-5 cm. D) 2-5, 4-7 cm. Show Answer Correct Answer: C) 2-3 cm, 4-5 cm. 9. Prostate gland A) Male. B) Female. C) All the above. D) None of the above. Show Answer Correct Answer: A) Male. 10. During this trimester, most of the organs form. A) First. B) Second. C) Third. D) None of the above. Show Answer Correct Answer: A) First. 11. Assertion:Parturition is induced by neural signal in maternal pituitary. Reason:At the end of gestation period, the maternal pituitary releases oxytocin which causes uterine contractions 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: D) A is false but R is true. 12. Which form of reproduction involves two parents A) Asexual. B) Sexual. C) Both. D) Neither. Show Answer Correct Answer: B) Sexual. 13. A test that uses sound waves to create a sonogram. A) Amniocentesis. B) Ultrasound. C) Germinal Sampling. D) Chorionic Villi Sampling. Show Answer Correct Answer: B) Ultrasound. 14. The second maturation division of the mammalian ovum occurs: A) Until the nucleus of the sperm has fused with that of the ovum. B) In the Graafian follicle after the first maturation division. C) Until after the ovum has been penetrated by a sperm. D) Shortly after ovulation before the ovum makes entry into the fallopian tube. Show Answer Correct Answer: C) Until after the ovum has been penetrated by a sperm. 15. By which cell division zygote is dividing after fertilization? A) Mitosis. B) Meiosis. C) Amitosis. D) Binary fission. Show Answer Correct Answer: A) Mitosis. 16. Which sequence represents the correct order of processes that result in the formation and development of an embryo? A) Meiosis $\rightarrow$ fertilization $\rightarrow$ mitosis. B) Mitosis $\rightarrow$ fertilization $\rightarrow$ meiosis. C) Fertilization $\rightarrow$ meiosis $\rightarrow$ mitosis. D) Fertilization $\rightarrow$ mitosis $\rightarrow$ meiosis. Show Answer Correct Answer: A) Meiosis $\rightarrow$ fertilization $\rightarrow$ mitosis. 17. During pregnancy, the placenta implants into the uterus and grows as a new organ. Its purpose is to A) Nourish the embryo, get rid of waste, and keep mother's blood separate. B) Cushion and protect the baby. C) Produce extra chromosomes. D) None of the above. Show Answer Correct Answer: A) Nourish the embryo, get rid of waste, and keep mother's blood separate. 18. What is the name of the male genitals? A) Vagina. B) Testes. C) Penis + Testes. D) Ovaries. Show Answer Correct Answer: C) Penis + Testes. 19. Oestrogen is produced: A) By the developing primary follicle. B) To positively feedback on LH production. C) To increase the thickness of the endometrium. D) All of the above. Show Answer Correct Answer: D) All of the above. 20. Removal of one ovary from a human female would most likely A) Affect the production of eggs. B) Make fertilization impossible. C) Make carrying a fetus impossible. D) Decrease her ability to provide essential nutrients to an embryo. Show Answer Correct Answer: A) Affect the production of eggs. 21. At birth, the ovaries of a girl contain oocytes that have stopped at which stage of meiosis? A) Prophase I. B) Metaphase II. C) Metaphase I. D) Prophase II. E) Anaphase I. Show Answer Correct Answer: A) Prophase I. 22. In the male, FSH A) Stimulates Leydig cells to produce testosterone. B) Stimulates Sertoli cells to produce sperm. C) Stimulates spermatogenesis in the epididymis. D) Inhibits LH by negative feedback. Show Answer Correct Answer: B) Stimulates Sertoli cells to produce sperm. 23. The basic difference between spermatogenesis and oogenesis is that ..... A) One mature ovum is produced in oogenesis, and four mature sperm are produced in spermatogenesis. B) Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only. C) Two more polar bodies are produced in spermatogenesis. D) The mature ovum is diploid, and the sperm is 1n. Show Answer Correct Answer: A) One mature ovum is produced in oogenesis, and four mature sperm are produced in spermatogenesis. 24. Which of the following measurements is closest to the diameter of a mature human ovum? A) 10 nanometers. B) 10 micrometers. C) 10 millimeters. D) 10 centimeters. Show Answer Correct Answer: B) 10 micrometers. 25. Fertilization and conception mean the same thing. They are interchangeable terms. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. ← 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