Human Reproduction is one of the most important chapters in Class 12 Biology Human Reproduction under the Bihar Board syllabus. This chapter explains the structure and function of male and female reproductive systems, gametogenesis, fertilization, implantation, pregnancy, and parturition.
To help you prepare for your board exams, below are 50 objective-type questions with options and one-word answers based on this chapter. These questions are designed according to the latest Bihar Board exam pattern.
Bihar Board Class 12 Biology Human Reproduction Objective Questions with Answers
1. The process of formation of sperm is called –
A) Oogenesis
B) Spermatogenesis
C) Fertilization
D) Implantation
Answer: Spermatogenesis
2. The process of formation of ovum is called –
A) Ovulation
B) Oogenesis
C) Fertilization
D) Menstruation
Answer: Oogenesis
3. Testes are located outside the abdominal cavity within the –
A) Scrotum
B) Urethra
C) Penis
D) Epididymis
Answer: Scrotum
4. Which hormone stimulates Leydig cells?
A) FSH
B) LH
C) Estrogen
D) Progesterone
Answer: LH
5. The functional unit of testis is –
A) Seminiferous tubule
B) Epididymis
C) Vas deferens
D) Scrotum
Answer: Seminiferous tubule
6. The acrosome in sperm contains –
A) DNA
B) Enzymes
C) Hormones
D) RNA
Answer: Enzymes
7. Which gland adds fructose to semen?
A) Prostate gland
B) Seminal vesicle
C) Cowper’s gland
D) Bulbourethral gland
Answer: Seminal vesicle
8. The female reproductive organ that produces ova is –
A) Uterus
B) Ovary
C) Oviduct
D) Cervix
Answer: Ovary
9. Fertilization normally occurs in –
A) Ovary
B) Uterus
C) Oviduct
D) Cervix
Answer: Oviduct
10. The outermost covering of the ovum is –
A) Zona pellucida
B) Plasma membrane
C) Corona radiata
D) Vitelline membrane
Answer: Corona radiata
11. The period of pregnancy in humans is about –
A) 280 days
B) 200 days
C) 300 days
D) 150 days
Answer: 280 days
12. The site of implantation is –
A) Ovary
B) Uterus
C) Oviduct
D) Cervix
Answer: Uterus
13. The placenta connects –
A) Ovary and fetus
B) Uterus and fetus
C) Mother’s blood and ovum
D) None of these
Answer: Uterus and fetus
14. Which hormone maintains pregnancy?
A) Estrogen
B) LH
C) Progesterone
D) FSH
Answer: Progesterone
15. Parturition is the process of –
A) Fertilization
B) Birth of baby
C) Ovulation
D) Implantation
Answer: Birth of baby
16. The menstrual cycle is controlled by –
A) Thyroid hormones
B) Pituitary hormones
C) Adrenal hormones
D) Pancreatic hormones
Answer: Pituitary hormones
17. The normal duration of menstrual cycle is –
A) 10 days
B) 20 days
C) 28 days
D) 40 days
Answer: 28 days
18. The ovum is released during –
A) Follicular phase
B) Ovulatory phase
C) Luteal phase
D) Menstrual phase
Answer: Ovulatory phase
19. The hormone responsible for ovulation is –
A) FSH
B) LH
C) Progesterone
D) Estrogen
Answer: LH
20. The number of chromosomes in human sperm is –
A) 46
B) 44
C) 23
D) 22
Answer: 23
21. The process of fusion of sperm and ovum is called –
A) Gametogenesis
B) Fertilization
C) Ovulation
D) Implantation
Answer: Fertilization
22. The male accessory glands include –
A) Prostate gland
B) Seminal vesicle
C) Bulbourethral gland
D) All of these
Answer: All of these
23. The inner lining of uterus is called –
A) Myometrium
B) Endometrium
C) Perimetrium
D) None
Answer: Endometrium
24. Human sperm is –
A) Motile
B) Non-motile
C) Immobile
D) None
Answer: Motile
25. The release of secondary oocyte occurs during –
A) Ovulation
B) Fertilization
C) Implantation
D) Menstruation
Answer: Ovulation
26. The first menstrual flow begins at –
A) Menopause
B) Menarche
C) Ovulation
D) Fertilization
Answer: Menarche
27. The end of menstruation is called –
A) Menarche
B) Menopause
C) Ovulation
D) Conception
Answer: Menopause
28. The average gestation period in humans is –
A) 9 months
B) 5 months
C) 10 months
D) 6 months
Answer: 9 months
29. The embryo gets nutrition from –
A) Ovary
B) Placenta
C) Uterus
D) Amnion
Answer: Placenta
30. The first milk produced after childbirth is called –
A) Colostrum
B) Serum
C) Milk
D) Plasma
Answer: Colostrum
31. The colostrum is rich in –
A) Protein
B) Antibodies
C) Sugar
D) Fat
Answer: Antibodies
32. The fallopian tube is also known as –
A) Oviduct
B) Ureter
C) Urethra
D) Vas deferens
Answer: Oviduct
33. The sperm tail helps in –
A) Movement
B) Digestion
C) Nutrition
D) Protection
Answer: Movement
34. Fertilization results in formation of –
A) Zygote
B) Gamete
C) Embryo
D) Placenta
Answer: Zygote
35. The placenta secretes –
A) Relaxin
B) hCG
C) Progesterone
D) All of these
Answer: All of these
36. Which structure stores sperm temporarily?
A) Epididymis
B) Vas deferens
C) Urethra
D) Testis
Answer: Epididymis
37. The fertilized egg is called –
A) Zygote
B) Embryo
C) Blastula
D) Ovum
Answer: Zygote
38. The blastocyst gets implanted in –
A) Uterus
B) Ovary
C) Oviduct
D) Cervix
Answer: Uterus
39. Which part of sperm penetrates the egg?
A) Acrosome
B) Tail
C) Middle piece
D) Neck
Answer: Acrosome
40. The hormone responsible for milk secretion is –
A) Prolactin
B) Oxytocin
C) Estrogen
D) LH
Answer: Prolactin
41. The hormone responsible for milk ejection is –
A) LH
B) FSH
C) Oxytocin
D) Progesterone
Answer: Oxytocin
42. The structure which carries sperm from testis to urethra is –
A) Vas deferens
B) Epididymis
C) Ureter
D) Urethra
Answer: Vas deferens
43. Which layer of uterus sheds during menstruation?
A) Endometrium
B) Myometrium
C) Perimetrium
D) None
Answer: Endometrium
44. Which gland secretes testosterone?
A) Leydig cells
B) Sertoli cells
C) Pituitary gland
D) Hypothalamus
Answer: Leydig cells
45. The fluid-filled cavity in blastocyst is –
A) Blastocoel
B) Morula
C) Zygote
D) Ovum
Answer: Blastocoel
46. The male gamete is –
A) Ovum
B) Sperm
C) Embryo
D) Zygote
Answer: Sperm
47. The female gamete is –
A) Sperm
B) Ovum
C) Zygote
D) Embryo
Answer: Ovum
48. The hormone that initiates follicle growth is –
A) FSH
B) LH
C) Progesterone
D) Oxytocin
Answer: FSH
49. The hormone that stimulates uterine contraction during childbirth is –
A) Estrogen
B) Oxytocin
C) Progesterone
D) LH
Answer: Oxytocin
50. The fertilized ovum divides to form –
A) Zygote → Morula → Blastocyst
B) Morula → Zygote → Embryo
C) Blastula → Zygote → Morula
D) Ovum → Embryo → Zygote
Answer: Zygote → Morula → Blastocyst
Conclusion-Bihar Board Class 12 Biology Human Reproduction Objective Questions with Answers
These 50 objective questions and 10 FAQs on Human Reproduction will help Bihar Board Class 12 Biology students prepare thoroughly for their examinations. Regular practice of such MCQs improves speed, accuracy, and conceptual clarity.
FAQs-Bihar Board Class 12 Biology Human Reproduction Objective Questions with Answers
1. What is the duration of the human menstrual cycle?
The normal menstrual cycle in human females lasts for about 28 days.
2. Where does fertilization occur in the female reproductive system?
Fertilization usually takes place in the ampulla region of the fallopian tube.
3. What is the function of the placenta?
The placenta helps in nutrient, gas, and waste exchange between the mother and the developing fetus.
4. What hormone is essential for maintaining pregnancy?
Progesterone is the key hormone responsible for maintaining pregnancy.
5. What is the significance of colostrum?
Colostrum is the first milk produced after childbirth; it is rich in antibodies and boosts the newborn’s immunity.
6. Which hormone is responsible for ovulation?
The Luteinizing Hormone (LH) triggers ovulation in females.
7. How many chromosomes are present in a human gamete?
Each human gamete (sperm or ovum) contains 23 chromosomes.
8. What is parturition?
Parturition refers to the process of childbirth or delivery of the baby.
9. Which cells in testes secrete testosterone?
Leydig cells (also known as interstitial cells) secrete the hormone testosterone.
10. What is the function of FSH in females?
FSH (Follicle Stimulating Hormone) helps in the growth and maturation of ovarian follicles.