Human Reproduction – Systems, Gametogenesis, Fertilisation, Pregnancy Quiz - ICSE Class 12 Biology

Free practice quiz: Human Reproduction – Systems, Gametogenesis, Fertilisation, Pregnancy (ICSE Class 12 Biology). 49 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 12 Biology practice quiz has 49 multiple-choice questions on Human Reproduction – Systems, Gametogenesis, Fertilisation, Pregnancy, and 49 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. During spermatogenesis, which cells undergo meiosis I to produce secondary spermatocytes?

   1. Spermatogonia
   2. Primary spermatocytes
   3. Spermatids
   4. Sertoli cells
   Show answer

   Answer: B. Primary spermatocytes

   Primary spermatocytes are diploid cells that undergo meiosis I to produce two haploid secondary spermatocytes.

2. Which structure in the female reproductive system is the site of fertilization?

   1. Uterus
   2. Ovary
   3. Fallopian tube (Oviduct)
   4. Cervix
   Show answer

   Answer: C. Fallopian tube (Oviduct)

   Fertilization, the fusion of sperm and ovum, typically occurs in the ampulla region of the fallopian tube.

3. The structure that develops from the Graafian follicle after ovulation and secretes progesterone is known as the:

   1. Corpus albicans
   2. Corpus luteum
   3. Antrum
   4. Zona pellucida
   Show answer

   Answer: B. Corpus luteum

   After ovulation, the remnants of the Graafian follicle reorganize to form the corpus luteum, which is crucial for producing progesterone to maintain the uterine lining.

4. The inner cell mass of the blastocyst will eventually differentiate into the:

   1. Trophoblast
   2. Embryo proper
   3. Placenta
   4. Amniotic cavity
   Show answer

   Answer: B. Embryo proper

   The inner cell mass (embryoblast) is a cluster of cells within the blastocyst that gives rise to the embryo itself.

5. The release of the ovum from the ovary is triggered by a surge in which hormone?

   1. Estrogen
   2. Progesterone
   3. Follicle-stimulating hormone (FSH)
   4. Luteinizing hormone (LH)
   Show answer

   Answer: D. Luteinizing hormone (LH)

   The pre-ovulatory LH surge is the crucial trigger for ovulation, causing the mature Graafian follicle to rupture and release the secondary oocyte.

More questions in this quiz

Answers and explanations are in the full quiz.

1. The acrosome reaction, crucial for fertilization, involves the release of enzymes from which part of the sperm?
2. Which hormone is primarily responsible for maintaining the uterine lining (endometrium) during pregnancy?
3. In oogenesis, the completion of meiosis II by the secondary oocyte occurs:
4. The morula stage of embryonic development is characterized by:
5. Which of the following structures is formed from the trophoblast during implantation and plays a crucial role in nutrient exchange?
6. Spermiogenesis is the process of transformation of spermatids into:
7. The luteal phase of the menstrual cycle is characterized by the dominance of which hormone secreted by the corpus luteum?
8. What is the primary function of Sertoli cells in the seminiferous tubules?
9. The blastocyst implants into which layer of the uterine wall?
10. The first meiotic division in oogenesis results in the formation of:
11. Which of the following is NOT a function of the placenta?
12. The release of a mature ovum from the ovary is called:
13. The Leydig cells, located in the interstitial spaces of the testes, are responsible for the production of which hormone?
14. Capacitation is a process that sperm undergo to become:
15. Which hormone is detected in the urine of a pregnant woman to confirm pregnancy?
16. The process of shedding the uterine lining along with blood and mucus during menstruation is called:
17. During spermatogenesis, spermatogonia divide mitotically to produce more spermatogonia and also differentiate into:
18. Which of the following prevents polyspermy during fertilization?
19. The amniotic fluid, surrounding the fetus during pregnancy, serves all of the following functions EXCEPT:
20. Which hormone surge triggers ovulation?
21. A primary spermatocyte has 46 chromosomes. After completing meiosis I, each secondary spermatocyte will have:
22. The point in the menstrual cycle when the ovum is released is typically around day:
23. The placenta is formed by the contribution of both the fetus and the mother. The fetal component of the placenta is derived from:
24. Which of the following events characterizes the proliferative phase of the menstrual cycle?
25. The sperm's ability to penetrate the zona pellucida is enhanced by enzymes released from the:
26. The process of ovum formation is called oogenesis. The female germ cells are initially present as:
27. Which of the following correctly lists the order of stages in spermatogenesis?
28. The secretion of milk from the mammary glands after childbirth is stimulated by which hormone?
29. The process by which the male gamete gains the capacity to fertilize the female gamete within the female reproductive tract is called:
30. The zygote undergoes rapid mitotic divisions, known as cleavage, to form a multicellular structure. The first such structure is a:
31. Which part of the sperm contains the enzymes necessary to penetrate the egg's outer layers?
32. Which statement about oogenesis is incorrect?
33. The secretory phase of the menstrual cycle is characterized by the influence of which hormone, responsible for preparing the endometrium for implantation?
34. During implantation, the blastocyst burrows into the:
35. What is the genetic constitution of a secondary spermatocyte?
36. Which of the following is NOT a hormone produced by the placenta during pregnancy?
37. The structure formed by the fusion of male and female pronuclei after fertilization is called a:
38. The seminal vesicles contribute a fluid that:
39. In males, the process of producing mature sperm cells from spermatogonia is known as:
40. The primary germ layer that gives rise to the nervous system and epidermis is the:
41. Which event marks the end of the follicular phase and the beginning of the luteal phase?
42. The vitelline membrane, which becomes the zona pellucida after fertilization, is permeable to small molecules. Its primary role during fertilization is:
43. The epididymis is a coiled tube where sperm undergo maturation and are stored. Where is it located?
44. The earliest stage of embryonic development characterized by the presence of a blastocoel (a fluid-filled cavity) is the:

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