Class 12 Human Reproduction Mock Test (CBSE)

Topics in Human Reproduction

• The male reproductive system
• The female reproductive system
• Gametogenesis
• Menstrual cycle
• Fertilisation and implantation
• Pregnancy and embryonic development
• Parturition and lactation

Human Reproduction practice questions with answers

1. Q1Multiple choice·1 mark
   During oogenesis in humans, what is the ploidy level of a primary oocyte and a secondary oocyte respectively?

   1. (a)Haploid and Diploid
   2. (b)Diploid and Haploid
   3. (c)Diploid and Diploid
   4. (d)Haploid and Haploid
   Show answer and step marks

   1. Correct option: (b) Diploid and Haploid+1

   Answer: (b)
2. Q2Multiple choice·1 mark
   Which of the following parts of the human female reproductive system is considered homologous to the scrotum in males?

   1. (a)Labia majora
   2. (b)Hymen
   3. (c)Ovary
   4. (d)Clitoris
   Show answer and step marks

   1. Correct option: (a) Labia majora+1

   Answer: (a)
3. Q3Short answer·3 marks
   Explain the hormonal control of the human menstrual cycle, highlighting the roles of FSH and LH during the mid-cycle.
   Show answer and step marks

   1. Gonadotropins (FSH and LH) from the anterior pituitary stimulate follicular development and secretion of estrogens by the growing ovarian follicles.+1
   2. A rapid surge of LH (LH surge) reaches its peak around the mid-cycle (14th day), inducing the rupture of the Graafian follicle and thereby causing ovulation.+1
   3. The remaining follicular tissues transform into the corpus luteum, which secretes progesterone essential for the maintenance of the endometrium for implantation.+1

   Answer: During the follicular phase, FSH and LH from the anterior pituitary rise gradually and stimulate follicle development and estrogen secretion. At mid-cycle (about day 14) LH and FSH peak; the LH surge causes the Graafian follicle to rupture and release the ovum (ovulation). The remaining follicle forms the corpus luteum, which secretes progesterone to maintain the endometrium for implantation.

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