Human Reproduction – MCQs

Male Reproductive System

Q1. The primary male reproductive organ is:
A. Penis
B. Testes
C. Epididymis
D. Prostate

Q2. Leydig cells produce:
A. FSH
B. LH
C. Testosterone
D. Progesterone

Q3. Sertoli cells function in:
A. Testosterone synthesis
B. Nourishment of developing sperm
C. Ovulation
D. Placenta formation

Q4. Sperms mature in:
A. Seminiferous tubules
B. Epididymis
C. Vas deferens
D. Urethra

Q5. The duct that carries sperm to urethra is:
A. Seminiferous tubule
B. Vas deferens
C. Epididymis
D. Ejaculatory duct

Q6. Semen is produced by:
A. Testes only
B. Accessory glands
C. Both testes and accessory glands
D. Prostate only

Q7. Normal human sperm has:
A. 22 autosomes + X/Y
B. 23 autosomes + X only
C. 23 autosomes + Y only
D. 46 chromosomes

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Female Reproductive System

Q8. The primary female reproductive organ is:
A. Ovary
B. Uterus
C. Fallopian tube
D. Vagina

Q9. Graafian follicle produces:
A. FSH
B. LH
C. Estrogen
D. Progesterone

Q10. Corpus luteum secretes:
A. Testosterone
B. Estrogen and progesterone
C. FSH
D. LH

Q11. Fertilization occurs in:
A. Ovary
B. Uterus
C. Fallopian tube
D. Vagina

Q12. Endometrium sheds during:
A. Ovulation
B. Fertilization
C. Menstruation
D. Implantation

Q13. Fimbriae are present in:
A. Ovary
B. Uterus
C. Fallopian tube
D. Vagina

Q14. Zona pellucida is:
A. Membrane around sperm
B. Membrane around egg
C. Membrane around ovary
D. Placental membrane

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Gametogenesis

Q15. Spermatogenesis occurs in:
A. Leydig cells
B. Seminiferous tubules
C. Epididymis
D. Vas deferens

Q16. Oogenesis begins during:
A. Birth
B. Puberty
C. Fetal life
D. Menopause

Q17. Primary oocytes are arrested in:
A. Prophase I
B. Metaphase I
C. Anaphase I
D. Telophase I

Q18. Secondary oocyte is arrested in:
A. Metaphase II
B. Anaphase II
C. Telophase II
D. Prophase II

Q19. Spermatogenesis produces:
A. Haploid sperms
B. Diploid sperms
C. Triploid sperms
D. Tetraploid sperms

Q20. At puberty, females have approximately how many primary oocytes?
A. 400–500
B. 40,000
C. 4–5 lakh
D. 1 million

Q21. Mature ovum is:
A. Diploid
B. Haploid
C. Triploid
D. Tetraploid

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Menstrual Cycle & Hormonal Regulation

Q22. Menstrual cycle is controlled by:
A. FSH only
B. LH only
C. FSH, LH, estrogen, and progesterone
D. Testosterone

Q23. Ovulation occurs approximately on:
A. Day 1
B. Day 14
C. Day 28
D. Day 7

Q24. FSH promotes:
A. Ovulation
B. Follicle development
C. Luteinization
D. Endometrial shedding

Q25. LH surge triggers:
A. Menstruation
B. Ovulation
C. Follicular atresia
D. Fertilization

Q26. Luteal phase is dominated by:
A. Estrogen
B. Progesterone
C. FSH
D. LH

Q27. Menstrual flow lasts:
A. 1–2 days
B. 3–5 days
C. 6–8 days
D. 10 days

Q28. Endometrium is maintained by:
A. FSH
B. LH
C. Progesterone
D. Testosterone

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Fertilization

Q29. Fertilization is:
A. Fusion of egg and sperm
B. Egg division
C. Sperm multiplication
D. Zygote cleavage

Q30. Fertilization usually occurs in:
A. Ovary
B. Fallopian tube
C. Uterus
D. Cervix

Q31. Zona pellucida prevents:
A. Sperm entry
B. Polyspermy
C. Fertilization
D. Ovulation

Q32. Cortical reaction occurs to:
A. Attract sperm
B. Prevent polyspermy
C. Start cleavage
D. Form placenta

Q33. Zygote is:
A. Haploid
B. Diploid
C. Triploid
D. Tetraploid

Q34. Implantation occurs in:
A. Ovary
B. Fallopian tube
C. Endometrium
D. Cervix

Q35. Trophoblast develops into:
A. Embryo
B. Placenta
C. Yolk sac
D. Amnion

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Early Embryonic Development

Q36. Cleavage of zygote produces:
A. Morula
B. Blastocyst
C. Embryo
D. Fetus

Q37. Blastocyst implants in:
A. Ovary
B. Endometrium
C. Uterine wall
D. Fallopian tube

Q38. Inner cell mass develops into:
A. Placenta
B. Embryo
C. Amniotic fluid
D. Yolk sac

Q39. Extraembryonic membrane that forms fetal part of placenta:
A. Amnion
B. Chorion
C. Yolk sac
D. Allantois

Q40. Amniotic fluid function:
A. Nutrient supply
B. Shock absorber and protection
C. Oxygen transport
D. Hormone production

Q41. Gastrulation forms:
A. Three germ layers
B. Neural tube
C. Fetus
D. Placenta

Q42. Primary germ layers:
A. Ectoderm, mesoderm, endoderm
B. Chorion, amnion, allantois
C. Yolk sac, amnion, chorion
D. None

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Pregnancy & Placenta

Q43. Placenta connects fetus with:
A. Ovary
B. Endometrium
C. Uterine wall and maternal blood
D. Umbilical cord only

Q44. Placenta is:
A. Temporary endocrine organ
B. Permanent organ
C. Gamete-producing
D. None

Q45. Human chorionic gonadotropin (hCG) maintains:
A. Corpus luteum
B. Endometrium
C. FSH levels
D. LH surge

Q46. Fetus gets oxygen via:
A. Lungs
B. Placenta
C. Heart
D. Umbilical artery

Q47. Amniotic sac protects fetus from:
A. Infection
B. Physical shock
C. Desiccation
D. All of the above

Q48. Umbilical cord contains:
A. 1 vein and 2 arteries
B. 2 veins and 1 artery
C. 1 vein and 1 artery
D. 2 veins and 2 arteries

Q49. Lactation is promoted by:
A. Prolactin
B. Oxytocin
C. Progesterone
D. FSH

Q50. Milk ejection is caused by:
A. Prolactin
B. Oxytocin
C. LH
D. Estrogen

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Parturition & Assisted Reproductive Technologies (ART)

Q51. Parturition is initiated by:
A. Oxytocin and prostaglandins
B. Estrogen
C. Progesterone
D. FSH

Q52. Caesarean section is performed when:
A. Natural delivery is difficult
B. Ovulation fails
C. Fertilization fails
D. Menstruation stops

Q53. In IVF, fertilization occurs:
A. In fallopian tube
B. In ovary
C. In lab (outside body)
D. In uterus

Q54. Test-tube babies are produced by:
A. Artificial insemination
B. In vitro fertilization (IVF)
C. Intrauterine insemination (IUI)
D. Cloning

Q55. ZIFT means:
A. Zygote intrafallopian transfer
B. Zygote intrauterine transfer
C. Egg transfer
D. Sperm transfer

Q56. ICSI is used for:
A. Female infertility
B. Male infertility
C. Both
D. Placenta formation

Q57. Contraception prevents:
A. Ovulation
B. Fertilization
C. Implantation
D. Any of the above

Q58. Barrier methods include:
A. Condom, diaphragm
B. Pill
C. IUD
D. Hormonal implant

Q59. Hormonal contraceptives work by:
A. Preventing ovulation
B. Preventing implantation
C. Altering cervical mucus
D. All of the above

Q60. Natural methods of contraception include:
A. Calendar method
B. Coitus interruptus
C. Both A and B
D. Condom

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NCERT Special/Diagram-Based Qs

Q61. Seminiferous tubules are:
A. Site of testosterone synthesis
B. Site of sperm production
C. Site of sperm storage
D. None

Q62. Ovarian cycle is:
A. Follicular + Luteal phases
B. Ovulatory + Luteal phases
C. Menstrual + Follicular phases
D. Follicular + Ovulatory + Luteal

Q63. Primary follicles are present at:
A. Birth
B. Puberty
C. Menopause
D. Fertilization

Q64. Secondary oocyte is released during:
A. Ovulation
B. Menstruation
C. Fertilization
D. Cleavage

Q65. Fertilization triggers:
A. Completion of meiosis II in oocyte
B. Cleavage
C. Both A and B
D. Implantation

Q66. Blastocyst implants in:
A. Endometrium
B. Ovary
C. Cervix
D. Vagina

Q67. Amniotic fluid is secreted by:
A. Chorion
B. Amnion
C. Placenta
D. Fetus

Q68. Placenta acts as:
A. Respiratory organ
B. Excretory organ
C. Nutritional organ
D. All of the above

Q69. IVF requires:
A. Hormonal stimulation
B. Egg retrieval
C. Fertilization in vitro
D. All of the above

Q70. hCG is detected in:
A. Blood only
B. Urine only
C. Blood and urine
D. Amniotic fluid

Assertion–Reason MCQs (15)

Instructions:
A. Both Assertion and Reason are correct, and Reason is the correct explanation of Assertion.
B. Both Assertion and Reason are correct, but Reason is NOT the correct explanation of Assertion.
C. Assertion is correct, but Reason is incorrect.
D. Assertion is incorrect, but Reason is correct.

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Q1.
Assertion: Ovulation occurs due to LH surge.
Reason: LH triggers rupture of Graafian follicle.

Q2.
Assertion: Fertilization occurs in the fallopian tube.
Reason: The ovum remains viable for 24 hours after ovulation.

Q3.
Assertion: Sperms are haploid.
Reason: Spermatogenesis involves meiosis to reduce chromosome number.

Q4.
Assertion: Corpus luteum secretes progesterone.
Reason: Progesterone maintains endometrial lining for implantation.

Q5.
Assertion: Menstruation occurs when fertilization does not take place.
Reason: Corpus luteum degenerates, reducing progesterone and estrogen.

Q6.
Assertion: Sertoli cells nourish developing sperm.
Reason: They form the blood-testis barrier.

Q7.
Assertion: Placenta acts as a temporary endocrine organ.
Reason: Placenta secretes hCG, estrogen, and progesterone.

Q8.
Assertion: Zona pellucida prevents polyspermy.
Reason: Cortical reaction hardens the zona pellucida after fertilization.

Q9.
Assertion: Oogenesis is asymmetrical.
Reason: Cytoplasm is unequally distributed during meiotic divisions.

Q10.
Assertion: IVF helps infertile couples.
Reason: Fertilization occurs outside the body in IVF.

Q11.
Assertion: Human sperm has a tail for locomotion.
Reason: Flagellum contains microtubules arranged in 9+2 pattern.

Q12.
Assertion: Amniotic fluid protects the fetus from mechanical shock.
Reason: Amniotic fluid also prevents dehydration.

Q13.
Assertion: FSH stimulates follicular growth.
Reason: FSH acts on granulosa cells of the ovary.

Q14.
Assertion: Menopause is the permanent cessation of menstrual cycles.
Reason: Ovaries stop producing estrogen and progesterone at menopause.

Q15.
Assertion: Lactation is controlled by prolactin and oxytocin.
Reason: Prolactin promotes milk production, oxytocin promotes milk ejection.

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30 Difficult NEET-Level MCQs – Human Reproduction

Q1. Leydig cells are stimulated by:
A. FSH
B. LH
C. Testosterone
D. Progesterone

Q2. Sperm maturation occurs in:
A. Epididymis
B. Seminiferous tubules
C. Vas deferens
D. Urethra

Q3. Primary oocyte is arrested in:
A. Prophase I
B. Metaphase I
C. Anaphase I
D. Metaphase II

Q4. Secondary oocyte is arrested in:
A. Metaphase II
B. Anaphase II
C. Telophase II
D. Prophase II

Q5. Fertilization triggers:
A. Completion of meiosis II in oocyte
B. Cleavage of zygote
C. Both A and B
D. Implantation

Q6. Corpus luteum degenerates if:
A. Fertilization occurs
B. Fertilization does not occur
C. Ovulation occurs
D. Menstruation occurs

Q7. Endometrium is maintained by:
A. FSH
B. LH
C. Progesterone
D. Testosterone

Q8. Which hormone triggers milk ejection?
A. Prolactin
B. Oxytocin
C. LH
D. Estrogen

Q9. Placenta is derived from:
A. Endometrium only
B. Trophoblast and endometrium
C. Chorion only
D. Amnion only

Q10. Human sperm chromosome number:
A. 23
B. 46
C. 22 + X
D. 22 + Y

Q11. Human egg chromosome number:
A. 23
B. 46
C. 22 + X
D. 22 + Y

Q12. Polyspermy is prevented by:
A. Zona pellucida
B. Cortical granules
C. Both A and B
D. None

Q13. Ovulation occurs approximately on:
A. Day 1
B. Day 7
C. Day 14
D. Day 28

Q14. Luteal phase lasts for:
A. 5 days
B. 10 days
C. 14 days
D. 28 days

Q15. Amniotic fluid is secreted by:
A. Chorion
B. Amnion
C. Placenta
D. Umbilical cord

Q16. Fetus receives oxygen via:
A. Umbilical vein
B. Umbilical artery
C. Placenta
D. Both A and C

Q17. Sperm capacitation occurs in:
A. Seminiferous tubules
B. Epididymis
C. Female reproductive tract
D. Vas deferens

Q18. Cortical reaction occurs to:
A. Attract sperm
B. Prevent polyspermy
C. Stimulate cleavage
D. Implant blastocyst

Q19. Blastocyst implants in:
A. Endometrium
B. Ovary
C. Fallopian tube
D. Cervix

Q20. hCG is detected in:
A. Maternal blood only
B. Maternal urine only
C. Both blood and urine
D. Amniotic fluid only

Q21. IVF requires:
A. Hormonal stimulation
B. Egg retrieval
C. Fertilization outside body
D. All of the above

Q22. ICSI is mainly used for:
A. Male infertility
B. Female infertility
C. Both
D. Placental defects

Q23. Barrier contraceptives include:
A. Condom and diaphragm
B. Pills
C. IUD
D. Hormonal implants

Q24. Hormonal contraceptives prevent:
A. Ovulation
B. Implantation
C. Cervical mucus alteration
D. All of the above

Q25. Menopause occurs due to:
A. Reduced LH/FSH
B. Reduced ovarian hormones
C. Increased estrogen
D. Ovulation failure

Q26. Spermatogenesis produces:
A. Haploid sperms
B. Diploid sperms
C. Tetraploid sperms
D. Triploid sperms

Q27. Oogenesis is asymmetrical because:
A. Cytoplasm divides equally
B. Only one ovum is formed
C. Polar bodies receive most cytoplasm
D. Cytoplasm is unevenly distributed

Q28. Placenta functions as:
A. Respiratory organ
B. Excretory organ
C. Nutritional organ
D. All of the above

Q29. Fertilization is usually:
A. Internal
B. External
C. Both
D. None

Q30. Seminal plasma is contributed by:
A. Testes only
B. Accessory glands only
C. Testes + Accessory glands
D. Epididymis only

Q.No	Answer	Q.No	Answer	Q.No	Answer	Q.No	Answer
1	B	18	A	35	A	52	A
2	C	19	A	36	A	53	C
3	B	20	C	37	B	54	B
4	B	21	B	38	B	55	A
5	B	22	C	39	B	56	B
6	C	23	B	40	B	57	D
7	A	24	B	41	A	58	A
8	A	25	B	42	A	59	D
9	C	26	B	43	C	60	C
10	C	27	B	44	A	61	B
11	C	28	C	45	A	62	D
12	C	29	A	46	B	63	A
13	B	30	B	47	D	64	A
14	B	31	B	48	A	65	C
15	B	32	B	49	A	66	A
16	C	33	B	50	B	67	B
17	C	34	C	51	A	68	D
18	A	35	A	52	A	69	D
				70	C

A. 70 Standard MCQs – Answers with Brief Explanations

Q.No	Answer	Explanation
1	B	Testes are primary male reproductive organs producing sperm and testosterone.
2	C	Leydig cells in testes produce testosterone.
3	B	Sertoli cells nourish developing sperm and form blood-testis barrier.
4	B	Sperms mature and gain motility in epididymis.
5	B	Vas deferens carries sperm from epididymis to urethra.
6	C	Semen is a mixture of sperm (testes) and secretions from accessory glands.
7	A	Human sperm has 23 chromosomes (haploid).
8	A	Ovary is primary female reproductive organ producing eggs and hormones.
9	C	Graafian follicle secretes estrogen.
10	B	Corpus luteum secretes estrogen and progesterone.
11	C	Fertilization occurs in fallopian tube.
12	C	Endometrium sheds during menstruation.
13	C	Fimbriae at the ovary end of fallopian tube capture ovum.
14	B	Zona pellucida surrounds ovum and helps sperm recognition.
15	B	Spermatogenesis occurs in seminiferous tubules.
16	C	Oogenesis begins during fetal life.
17	A	Primary oocyte arrests in prophase I until ovulation.
18	A	Secondary oocyte arrests in metaphase II until fertilization.
19	A	Spermatogenesis produces haploid sperm.
20	C	Females have ~4–5 lakh primary oocytes at birth.
21	B	Ovum is haploid (n=23).
22	C	Menstrual cycle regulated by FSH, LH, estrogen, progesterone.
23	B	Ovulation occurs around day 14 of cycle.
24	B	FSH promotes follicle development.
25	B	LH surge triggers ovulation.
26	B	Luteal phase dominated by progesterone.
27	B	Menstrual flow usually lasts 3–5 days.
28	C	Progesterone maintains endometrium.
29	A	Fertilization is fusion of sperm and egg.
30	B	Fertilization occurs in fallopian tube.
31	B	Zona pellucida prevents multiple sperms entry (polyspermy).
32	B	Cortical reaction blocks polyspermy.
33	B	Zygote is diploid (2n=46).
34	C	Implantation occurs in endometrium.
35	B	Trophoblast develops into placenta.
36	A	Cleavage produces morula.
37	B	Blastocyst implants in endometrium.
38	B	Inner cell mass forms embryo.
39	B	Chorion forms fetal part of placenta.
40	B	Amniotic fluid cushions fetus.
41	A	Gastrulation forms 3 germ layers.
42	A	Ectoderm, mesoderm, endoderm are primary germ layers.
43	C	Placenta connects fetus to maternal blood supply.
44	A	Placenta is temporary endocrine organ.
45	A	hCG maintains corpus luteum.
46	B	Oxygen reaches fetus via placenta and umbilical vein.
47	D	Amniotic sac protects fetus from infection, shock, dehydration.
48	A	Umbilical cord has 1 vein and 2 arteries.
49	A	Prolactin promotes milk production.
50	B	Oxytocin triggers milk ejection.
51	A	Oxytocin & prostaglandins initiate labor.
52	A	C-section performed when natural delivery is difficult.
53	C	IVF fertilization occurs outside the body.
54	B	Test-tube babies are produced by IVF.
55	A	ZIFT: Zygote intrafallopian transfer.
56	B	ICSI addresses male infertility.
57	D	Contraception prevents ovulation, fertilization, or implantation.
58	A	Condom, diaphragm are barrier methods.
59	D	Hormonal contraceptives prevent ovulation, implantation, and alter cervical mucus.
60	C	Natural methods: calendar, coitus interruptus.
61	B	Seminiferous tubules are site of sperm production.
62	D	Ovarian cycle: Follicular + Ovulatory + Luteal phases.
63	A	Primary follicles are present at birth.
64	A	Secondary oocyte released during ovulation.
65	C	Fertilization triggers completion of meiosis II and cleavage.
66	A	Blastocyst implants in endometrium.
67	B	Amniotic fluid secreted by amnion.
68	D	Placenta functions in respiration, excretion, and nutrition.
69	D	IVF requires hormonal stimulation, egg retrieval, fertilization.
70	C	hCG is detected in maternal blood and urine.

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B. Assertion–Reason MCQs – Answers with Explanations

Q.No	Answer	Explanation
1	A	LH surge triggers rupture of Graafian follicle → ovulation.
2	A	Ovum is viable ~24h; fertilization occurs in fallopian tube.
3	A	Spermatogenesis involves meiosis → haploid sperm.
4	A	Corpus luteum secretes progesterone → maintains endometrium.
5	A	Absence of fertilization → corpus luteum degenerates → menstruation.
6	A	Sertoli cells nourish sperm and form blood-testis barrier.
7	A	Placenta secretes hormones → temporary endocrine organ.
8	A	Cortical reaction hardens zona pellucida → prevents polyspermy.
9	A	Cytoplasm unevenly divided → one ovum + polar bodies.
10	A	IVF: fertilization outside body helps infertile couples.
11	A	Sperm tail (flagellum) has 9+2 microtubule arrangement → motility.
12	A	Amniotic fluid cushions fetus and prevents dehydration.
13	A	FSH acts on granulosa cells → stimulates follicular growth.
14	A	Ovarian hormone decline causes permanent cessation of menstruation.
15	A	Prolactin → milk production; oxytocin → milk ejection.

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C. Difficult NEET-Level MCQs – Answers with Explanations

Q.No	Answer	Explanation
1	B	LH stimulates Leydig cells to produce testosterone.
2	A	Sperm maturation occurs in epididymis.
3	A	Primary oocyte arrested in prophase I until ovulation.
4	A	Secondary oocyte arrested in metaphase II until fertilization.
5	C	Fertilization triggers completion of meiosis II + cleavage.
6	B	Without fertilization, corpus luteum degenerates.
7	C	Progesterone maintains endometrium.
8	B	Oxytocin triggers milk ejection.
9	B	Placenta develops from trophoblast + endometrium.
10	A	Sperm has 23 chromosomes.
11	A	Ovum has 23 chromosomes.
12	C	Zona pellucida + cortical granules prevent polyspermy.
13	C	Ovulation occurs ~day 14.
14	C	Luteal phase lasts ~14 days.
15	B	Amniotic fluid secreted by amnion.
16	D	Fetus receives oxygen via placenta + umbilical vein.
17	C	Capacitation occurs in female reproductive tract.
18	B	Cortical reaction prevents polyspermy.
19	A	Blastocyst implants in endometrium.
20	C	hCG detected in blood and urine.
21	D	IVF requires hormones, egg retrieval, in vitro fertilization.
22	A	ICSI used for male infertility.
23	A	Condom, diaphragm are barrier contraceptives.
24	D	Hormonal contraceptives prevent ovulation, implantation, alter cervical mucus.
25	B	Menopause occurs due to decline in ovarian hormones.
26	A	Spermatogenesis produces haploid sperm.
27	D	Oogenesis is asymmetrical → cytoplasm unevenly distributed.
28	D	Placenta functions in respiration, excretion, nutrition.
29	A	Human fertilization is internal.
30	C	Seminal plasma contributed by testes + accessory glands.