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Human Reproduction EXERCISES Solutions
- Q1(a): Fill in the blanks: (a) Humans reproduce _____________ (asexually/sexually)
- Q1(a): Fill in the blanks: Humans reproduce _____________ (asexually/sexually)
- Q1(b): Fill in the blanks: Humans are _____________ (oviparous, viviparous, ovoviviparous)
- Q1(b): Fill in the blanks: (b) Humans are _____________ (oviparous, viviparous, ovoviviparous)
- Q1(c): Fill in the blanks: (c) Fertilisation is _____________ in humans (external/internal)
- Q1(c): Fill in the blanks: Fertilisation is _____________ in humans (external/internal)
- Q1(d): Fill in the blanks: Male and female gametes are _____________ (diploid/haploid)
- Q1(d): Fill in the blanks: (d) Male and female gametes are _____________ (diploid/haploid)
- Q1(e): Fill in the blanks: Zygote is _____________ (diploid/haploid)
- Q1(e): Fill in the blanks: (e) Zygote is _____________ (diploid/haploid)
- Q1(f): Fill in the blanks: (f) The process of release of ovum from a mature follicle is called _____________
- Q1(f): Fill in the blanks: The process of release of ovum from a mature follicle is called _____________.
- Q1(g): Fill in the blanks: Ovulation is induced by a hormone called _____________.
- Q1(g): Fill in the blanks: (g) Ovulation is induced by a hormone called _____________
- Q1(h): Fill in the blanks: The fusion of male and female gametes is called _____________.
- Q1(h): Fill in the blanks: (h) The fusion of male and female gametes is called _____________
- Q1(i): Fill in the blanks: Fertilisation takes place in _____________.
- Q1(i): Fill in the blanks: (i) Fertilisation takes place in _____________
- Q1(j): Fill in the blanks: Zygote divides to form _____________ which is implanted in uterus.
- Q1(j): Fill in the blanks: (j) Zygote divides to form _____________which is implanted in uterus.
- Q1(k): Fill in the blanks: The structure which provides vascular connection between foetus and uterus is called _____________.
- Q1(k): Fill in the blanks: (k) The structure which provides vascular connection between foetus and uterus is called _____________
- Q2: Draw a labelled diagram of male reproductive system.
- Q2: Draw a labelled diagram of male reproductive system.
- Q3: Draw a labelled diagram of female reproductive system.
- Q3: Draw a labelled diagram of female reproductive system.
- Q4: Write two major functions each of testis and ovary.
- Q4: Write two major functions each of testis and ovary.
- Q5: Describe the structure of a seminiferous tubule.
- Q5: Describe the structure of a seminiferous tubule.
- Q6: What is spermatogenesis? Briefly describe the process of spermatogenesis.
- Q6: What is spermatogenesis? Briefly describe the process of spermatogenesis.
- Q7: Name the hormones involved in regulation of spermatogenesis.
- Q7: Name the hormones involved in regulation of spermatogenesis.
- Q8: Define spermiogenesis and spermiation.
- Q8: Define spermiogenesis and spermiation.
- Q9: Draw a labelled diagram of sperm.
- Q9: Draw a labelled diagram of sperm.
- Q10: What are the major components of seminal plasma?
- Q10: What are the major components of seminal plasma?
- Q11: What are the major functions of male accessory ducts and glands?
- Q11: What are the major functions of male accessory ducts and glands?
- Q12: What is oogenesis? Give a brief account of oogenesis.
- Q12: What is oogenesis? Give a brief account of oogenesis.
- Q13: Draw a labelled diagram of a section through ovary.
- Q13: Draw a labelled diagram of a section through ovary.
- Q14: Draw a labelled diagram of a Graafian follicle?
- Q14: Draw a labelled diagram of a Graafian follicle?
- Q15(a): Name the functions of the following: Corpus luteum
- Q15(a): Name the functions of the following: (a) Corpus luteum
- Q15(b): Name the functions of the following: (b) Endometrium
- Q15(b): Name the functions of the following: Endometrium
- Q15(c): Name the functions of the following: (c) Acrosome
- Q15(c): Name the functions of the following: Acrosome
- Q15(d): Name the functions of the following: (d) Sperm tail
- Q15(d): Name the functions of the following: Sperm tail
- Q15(e): Name the functions of the following: (e) Fimbriae
- Q15(e): Name the functions of the following: Fimbriae
- Q16(a): Identify True/False statements. Correct each false statement to make it true. (a) Androgens are produced by Sertoli cells. (True/False)
- Q16(a): Identify True/False statements. Correct each false statement to make it true. Androgens are produced by Sertoli cells. (True/False)
- Q16(b): Identify True/False statements. Correct each false statement to make it true. (b) Spermatozoa get nutrition from Sertoli cells. (True/False)
- Q16(b): Identify True/False statements. Correct each false statement to make it true. Spermatozoa get nutrition from Sertoli cells. (True/False)
- Q16(c): Identify True/False statements. Correct each false statement to make it true. (c) Leydig cells are found in ovary. (True/False)
- Q16(c): Identify True/False statements. Correct each false statement to make it true. Leydig cells are found in ovary. (True/False)
- Q16(d): Identify True/False statements. Correct each false statement to make it true. (d) Leydig cells synthesise androgens. (True/False)
- Q16(d): Identify True/False statements. Correct each false statement to make it true. Leydig cells synthesise androgens. (True/False)
- Q16(e): Identify True/False statements. Correct each false statement to make it true. (e) Oogenesis takes place in corpus luteum. (True/False)
- Q16(e): Identify True/False statements. Correct each false statement to make it true. Oogenesis takes place in corpus luteum. (True/False)
- Q16(f): Identify True/False statements. Correct each false statement to make it true. (f) Menstrual cycle ceases during pregnancy. (True/False)
- Q16(f): Identify True/False statements. Correct each false statement to make it true. Menstrual cycle ceases during pregnancy. (True/False)
- Q16(g): Identify True/False statements. Correct each false statement to make it true. (g) Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False)
- Q16(g): Identify True/False statements. Correct each false statement to make it true. Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False)
- Q17: What is menstrual cycle? Which hormones regulate menstrual cycle?
- Q17: What is menstrual cycle? Which hormones regulate menstrual cycle?
- Q18: What is parturition? Which hormones are involved in induction of parturition?
- Q18: What is parturition? Which hormones are involved in induction of parturition?
- Q19: In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
- Q19: In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
- Q20: How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?
- Q20: How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?
- Q21: How many eggs do you think were released by the ovary of a female dog which gave birth to 6 puppies?
- Q21: How many eggs do you think were released by the ovary of a female dog which gave birth to 6 puppies?
Chapters in CBSE - Class 12 Biology
- Reproduction in Organisms
- Reproductive Health
- Principles of Inheritance and Variation
- Molecular Basis of Inheritance
- Evolution
- Human Health and Disease
- Strategies for Enhancement in Food Production
- Microbes in Human Welfare
- Biotechnology: Principles and Processes
- Biotechnology and Its Applications
- Organisms and Populations
- Ecosystem
- Biodiversity and Conservation
- Environmental Issues
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Other Subjects in CBSE - Class 12
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