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.

Sample questions

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

   1. Spermatogonia
   2. Primary spermatocytes
   3. Spermatids
   4. Sertoli cells
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   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
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   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
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   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
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   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)
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   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.

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