This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 3 Human Reproduction – Quiz 70 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 70 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the name of the hormone that triggers ovulation in females? A) Luteinizing hormone (LH). B) Progesterone. C) Thyroid-stimulating hormone. D) Estrogen. Show Answer Correct Answer: A) Luteinizing hormone (LH). 2. What are the three stages of labor? A) The easy stage, the difficult stage, and the impossible stage. B) The first stage, the second stage, and the third stage. C) The morning stage, the afternoon stage, and the evening stage. D) The happy stage, the sad stage, and the angry stage. Show Answer Correct Answer: B) The first stage, the second stage, and the third stage. 3. What causes puberty to occur A) No one knows. B) Hormones. C) Nerve impulses. D) Enzymes. Show Answer Correct Answer: B) Hormones. 4. Pregnancy is characterised by all, except A) Human placental lactogenic hormone keeps increasing throughout pregnancy. B) Pulsatile GnRH stimulates the anterior lobe to secrete FSH and LH. C) Corpus luteum is rescued from regression by hCG, produced by syncytiotrophoblast or chorion in the first trimester. D) In first trimester corpus luteum, stimulated by hCG is responsible for the production of estrogen and progesterone. Show Answer Correct Answer: B) Pulsatile GnRH stimulates the anterior lobe to secrete FSH and LH. 5. Name the first organs which formed first during embryonic development A) Heart. B) Kidney. C) Lungs. D) Brain. Show Answer Correct Answer: D) Brain. 6. The process by which human organisms produce others of their kind. A) Reproduction. B) Fertilization. C) Ovulation. D) Menstruation. Show Answer Correct Answer: A) Reproduction. 7. In human females, meiosis-II is not completed until A) Uterine implantation. B) Birth. C) Puberty. D) Fertilisation. Show Answer Correct Answer: D) Fertilisation. 8. In humans, fertilization normally occurs in the ..... A) Cervix. B) Uterus. C) Fallopian tube. D) Ovary. Show Answer Correct Answer: C) Fallopian tube. 9. The menstrual cycle is every ..... days. A) 27-35. B) 28-35. C) 27-36. D) 20-35. Show Answer Correct Answer: B) 28-35. 10. Which male organ is an exit for both urine and semen? A) Cowper glands. B) Ureter. C) Urethra. D) Seminal vesicle. Show Answer Correct Answer: C) Urethra. 11. What part of the male reproductive system produces the hormone testosterone? A) Penis. B) Epididymis. C) Prostate Gland. D) Testes. Show Answer Correct Answer: D) Testes. 12. Which one of the following menustrual irregularities is correctly matched? A) Menorrhagia-excessive menstruation. B) Amenorrhoea-absence of menstruation. C) Dysmenorrhea-irregularity of menstruation. D) Oligomenorrhea-painful menstruation. Show Answer Correct Answer: B) Amenorrhoea-absence of menstruation. 13. Which of the following is most likely a reason for not occurring regular menstruation cycle in females? A) Maintenance of high concentration of sex hormones in the bloodstream. B) Maintenance of hypertrophic endometrial lining. C) Retention of well-developed corpus luteum. D) Fertilization of the ovum. Show Answer Correct Answer: D) Fertilization of the ovum. 14. Prenatal care is mostly focused on ..... A) Preparing a family. B) Health of the mother and fetus. C) Health of the father. D) The needs of the fetus. Show Answer Correct Answer: B) Health of the mother and fetus. 15. The part in the sperm that helps in dissolving zona pellucida A) Acrosome. B) Head. C) Zona pellucida. D) Vitelline membrane. Show Answer Correct Answer: A) Acrosome. 16. Leydig cells are found in A) Testis. B) Ovary. C) Vasa deferens. D) Stroma. Show Answer Correct Answer: A) Testis. 17. Secondary Spermatocytes are haploid. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. In which part of the female reproductive system does a baby develop? A) Uterus. B) Vagina. C) Oviduct. D) Ovary. Show Answer Correct Answer: A) Uterus. 19. What occurs when the blastocyst attaches itself to the wall of the uterus? A) Ovulation. B) Fertilization. C) Menstruation. D) Implantation. Show Answer Correct Answer: D) Implantation. 20. This is where the fetus develops until it is born. A) Uterus. B) Vagina. C) Urethra. D) Testes. Show Answer Correct Answer: A) Uterus. 21. The fluid that provides energy for the sperm cells comes from the ..... A) Urethra. B) Bulbourethral glands. C) Prostate gland. D) Seminal vesicles. Show Answer Correct Answer: D) Seminal vesicles. 22. Which of the following pairs of structures contributes directly to the development of the placenta? A) Amnion and allantois. B) Chorion and allantois. C) Chorion and endometrium. D) Amnion and endometrium. Show Answer Correct Answer: C) Chorion and endometrium. 23. Release of sperm from seminiferous tubule is called A) Spermiogenesis. B) Spermiation. C) Spermatogenesis. D) Spermatocytogenesis. Show Answer Correct Answer: B) Spermiation. 24. In humans, the period of development before birth is known as A) Fertilization. B) Gestation. C) Pollination. D) Menstruation. Show Answer Correct Answer: B) Gestation. 25. Identify the following organisms according to their nature of reproduction:Frog A) Asexual. B) Sexual. C) All the above. D) None of the above. Show Answer Correct Answer: B) Sexual. ← 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