This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 3 Human Reproduction – Quiz 57 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 3 Human Reproduction Quiz 57 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A biologist made a hypothesis that the pituitary and the ovary both influence the uterinecycle in females, which of the following observation would best support this hypothesis? A) The removal of pituitary is followed by death. B) The removal of the ovary can greatly affect the menstrual cycle. C) The removal of the ovary is followed by a non-functioning pituitary. D) The uterine development takes place only when both pituitary and ovary are present. Show Answer Correct Answer: B) The removal of the ovary can greatly affect the menstrual cycle. 2. Which of the following BEST explains why women should increase their intake of folate during pregnancy? A) Humans cannot synthesize folate. B) The foetus is at risk of developing spina bifida if it does not get sufficient folate. C) The foetus is at risk of having a deformed skeleton if it does not get sufficient folate. D) The foetus will withdraw folate from the mother's body, thus putting her at risk of developing deformities. Show Answer Correct Answer: B) The foetus is at risk of developing spina bifida if it does not get sufficient folate. 3. HCG, HPL, relaxin etc ..... are ..... A) Pitiutary hormones. B) Placental hormones. C) Ovarian hormones. D) None of the above. Show Answer Correct Answer: B) Placental hormones. 4. All living things grow and develop ..... is an increase in mass, while ..... results in different abilities. A) Growth ; Development. B) Development ; Growth. C) All the above. D) None of the above. Show Answer Correct Answer: A) Growth ; Development. 5. It is the hormone released by the ovaries which regulates the condition of the endometrium or the inner lining of the uterus. A) Estrogen. B) Progesterone. C) Oxcytoxin. D) Inhibin. Show Answer Correct Answer: B) Progesterone. 6. Which layer of embryo is formed first? A) Ectoderm. B) Mesoderm. C) Endoderm. D) Both b and c. Show Answer Correct Answer: C) Endoderm. 7. The first movements of the foetus and appearance of hair on the head are usually observed during which month of pregnancy? A) 2 nd month. B) 3 rd month. C) 5 th month. D) 6 th month. Show Answer Correct Answer: C) 5 th month. 8. What is the name of the sac that contains the testicles? A) Glans. B) Penis. C) Prostate gland. D) Scrotum. Show Answer Correct Answer: D) Scrotum. 9. In humans, egg cells are usually fertilized in the A) Vagina. B) Uterus. C) Oviduct. D) Ovary. Show Answer Correct Answer: C) Oviduct. 10. Formation of archentron starts in A) Morula. B) Blastula. C) Early gastrula. D) Early n eurula. Show Answer Correct Answer: C) Early gastrula. 11. Amniotic fluid protect foetus from A) Shock. B) Encystment. C) Degeneration. D) Disease. Show Answer Correct Answer: A) Shock. 12. During ovulation, the ovary releases A) Oogonia. B) Ootid. C) Primary oocyte. D) Secondary oocyte. Show Answer Correct Answer: D) Secondary oocyte. 13. In humans, which part of blastocyst will develop into foetus? A) Trophoblast. B) Inner cell mass. C) Chorion. D) Morula. Show Answer Correct Answer: B) Inner cell mass. 14. When does egg production stop? A) Around age 50. B) Around puberty. C) Never. D) None of the above. Show Answer Correct Answer: A) Around age 50. 15. THE MONTHLY RELEASE OF AN OVUM FROM THE OVARY A) MENARCHE. B) MENSES. C) OVARIAN CYCLE. D) OVULATION. Show Answer Correct Answer: D) OVULATION. 16. The male gamete is known as: A) Spiral. B) Telestra. C) Testes. D) Sperm. Show Answer Correct Answer: D) Sperm. 17. What is the function of the human male reproductive system? A) Grow and develop baby. B) Produce egg and deliver egg to female. C) Internal fertilization. D) Produce sperm and deliver sperm to female. Show Answer Correct Answer: D) Produce sperm and deliver sperm to female. 18. Which statement best describes fertilization in humans? A) Fusion of two zygotes. B) Division of a fertilized egg. C) Union of male and female gametes. D) Union of two somatic cells. Show Answer Correct Answer: C) Union of male and female gametes. 19. Sertoli cell is regulated by the pituitary hormone known as A) FSH. B) GH. C) LH. D) Prolactin. Show Answer Correct Answer: A) FSH. 20. Which option correctly shows the development of a fertilised egg? A) Foetus > zygote > embryo > baby. B) Embryo > foetus > zygote > baby. C) Zygote > embryo > foetus > baby. D) Zygote > foetus > embryo > baby. Show Answer Correct Answer: C) Zygote > embryo > foetus > baby. 21. An egg is larger than a sperm because A) The sperm can swim. B) The egg have larger nucleus. C) The egg has food store but the sperm dose not have. D) T he egg is not a living cell. Show Answer Correct Answer: C) The egg has food store but the sperm dose not have. 22. Where does the implantation occur and the zygote develop? A) In the uterus. B) In the ovary. C) In the vagina. D) In the fallopian tube. Show Answer Correct Answer: A) In the uterus. 23. Which animals listed below have a menstrual cycle? A) Apes and monkeys. B) Humans. C) Bats. D) All of the above. Show Answer Correct Answer: D) All of the above. 24. What signals the first day of the menstrual cycle? A) Ovulation. B) Beginning of the period. C) Last day of the period. D) Thickening of endometrium. Show Answer Correct Answer: B) Beginning of the period. 25. What is an advantage of internal fertilization and development over external fertilization and development? A) There is a greater chance for genetic variation. B) Only one sperm is needed to fertilize the egg. C) Genes can pass directly from the mother to the embryo. D) The chance for zygote survival is increased. Show Answer Correct Answer: D) The chance for zygote survival is increased. ← 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