Human reproductive system MCQ Solved Paper for NMAT

1. Which of the following statements is most correct about the human menstrual cycle.
A. The menstrual cycle in all women is a 28 day cycle
B. Ovulation always occurs at the midpoint of the menstrual cycle
C. A high body temperature indicates ovulation is occurring
D. The menstrual cycle is an endocrine cycle regulating reproductive physiological changes
Answer : D

2. Pregnancy begins with implantation of
A. Embryo
B. Fertilized ovum
C. Blastopore
D. Blastocyst
Answer : D

3. Prostate gland produces a secretion for ...
A. Attracting sperms
B. Stimulating sperm activity
C. Inhibiting sperm activity
D. None of the above
Answer : B

4. A genetically diseased father (male) marries with a normal female and gives birth to 3 carrier girls and 5 normal sons. Find out the type of genetic disease.
A. Sex-influenced disease
B. Blood group inheritance disease
C. Sex-linked disease
D. Sex-recessive disease
Answer : C

5. Identical twins are also known as ..
A. monozygotic twins
B. Dizygotic twins
C. Fraternal twins
D. Zygotic twins
Answer : A

6. Correct sequence in embryonic development is ..
A. Fertilization -> zygote -> cleavage -> morula -> blastula -> gastrula
B. Fertilization -> zygote -> cleavage -> blastula -> morula -> gastrula
C. Fertilization -> zygote -> cleavage -> morula -> blastula -> gastrula
D. Fertilization -> zygote -> gastrulae -> morula -> blastula -> cleavage
Answer : A

7. In infertility treatment the ovum is fertilized outside the body and injected into the uterus
A. Gamete intra fallopian transfer
B. Invitro fertilization
C. Intra uterine insemination
D. Zygote intra fallopian transfer
Answer : B

8. Haemophilic man marries a normal woman. Their off springs will be
A. All haemophilic
B. All boys haemophilic
C. All girls haemophilic
D. All normal
Answer : D

9. What happens during fertilization when many sperms reach close to ovum ....
A. Cells of corona radiata trap all the sperm except one
B. Only two sperms nearest to ovum penetrate zona pellucida
C. Secretion of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida
D. All sperms except the one nearest to ovum lose their tails
Answer : C

10. Cell division that occurs in zygote is called
A. meiosis
B. Mitosis
C. Cleavage
D. Differentiation
Answer : C

11. Tunica albuginea is related to
A. Prostate gland
B. Pituitary gland
C. Hypothalamus
D. Testes
Answer : D

12. The number and appearance of chromosomes in the nucleus of a eukaryotic cell is called as
A. Karyotype
B. Genotype
C. Phenotype
D. Cytogenetics
Answer : A

13. Fertilization of the ovum takes place in
A. Ovary
B. Uterus
C. Fallopian tube ampulla
D. Cervix
Answer : C

14. Fertilization is fusion of ..
A. Diploid spermatozoan with diploid ovum to form diploid zygote
B. Haploid spermatozoan with diploid ovum to form diploid zygote
C. Diploid spermatozoan with haploid ovum to form diploid zygote
D. Haploid spermatozoan with haploid ovum to form diploid zygote
Answer : D

15. A child's blood group is 'o'. The parent's blood groups cannot be
A. A AND B
B. A AND A
C. AB AND O
D. B AND O
Answer : C

16. Layers of ovum from outside to inside are .
A. Corona radiata, zona pellucida, vitelline membrane
B. Zona pellucida, corona radiata, vitelline membrane
C. Vitelline membrane, zona pellucida, corona radiata
D. Zona pellucida, vitelline membrane, corona radiate
Answer : A

17. Which one of the following is produced early in the life of a human female?
A. Relaxin
B. Oxytocin
C. Prolactin
D. Progesterone
Answer : C

18. What is the best sperm extraction technique for men with obstructive azoospermia?
A. TESE - Microsurgical testicular sperm extraction
B. Percutaneous Epididymal Sperm Aspiration (PESA)
C. Intra cytoplasmic sperm injection ( ICSI)
D. Fine needle aspiration
Answer : B

19. Immediately after ovulation, the ovum is covered by a membrane called
A. Chorion
B. Zona pellucida
C. Corona radiata
D. Vitelline membrane
Answer : B

20. Combined Oral contraceptives prevent pregnancy by
A. Tubal block
B. Preventing spermatogenesis
C. Forming a barrier between the ovum and sperm
D. Suppressing ovulation
Answer : D

21. Failure of the brain to grow in the foetus may result in:
A. Plagiocephaly
B. Craniostenosis
C. Anencephaly
D. Microcephaly
Answer : D

22. In humans female ovulation occurs during menstrual cycle
A. At the end of proliferative phase
B. At the beginning of proliferative phase
C. Before the end of secretary phase
D. In the middle of secretary phase
Answer : A

23. The functional unit of testis of man is ...
A. Uriniferous tubules
B. Malpighian tubules
C. Seminiferous tubules
D. Acini or lobules
Answer : C

24. In uterus, endometrium proliferates in response to ...
A. Relaxin
B. Oxytocin
C. Progesterone
D. Oestrogen
Answer : D

25. Embryonic connective tissue is formed from ..
A. ectoderm
B. endoderm
C. Mesenchyme
D. Mesogloea
Answer : C

26. Pregnancy test is confirmed by the presence of
A. Prolactin in urine
B. Relaxin in urine
C. H c g in urine
D. Fsh and lh in urine
Answer : C

27. Cu ions released from copper-releasing intra uterine devices (iuds)
A. Prevent ovulation
B. Suppress sperm motility
C. Prevents implantation of embryo
D. Kills sperms
Answer : B

28. After ovulation graffian follicles turns into
A. Corpus luteum
B. Corpus albicans
C. Corpus callosum
D. Corpus artesia
Answer : A

29. In a 28 day menstrual cycle, ovulation occurs on ...
A. Day 1
B. Day 5
C. Day 14
D. Day 28
Answer : C

30. Part of fallopian tube closest to ovary is
A. Infundibulum
B. Cervix
C. Ampulla
D. Isthmus
Answer : A

31. In human embryo, the digestive system develops from the
A. Epithelium
B. Mesoderm
C. Endoderm
D. Ectoderm
Answer : C

32. Decreased motility of sperm <40 % is known as
A. Azoospermia
B. Oligospermia
C. Asthenozoospermia
D. Necrozoospermia
Answer : C

33. Haemophilia is more common in males because it is a
A. Recessive character carried by y-chromosome
B. Dominant character carried by y-chromosome
C. Dominant trait carried by x-chromosome
D. Recessive trait carried by x-chromosome
Answer : A

34. Sertoli cells are found in
A. Seminiferous tubules
B. Ovaries
C. Prostate gland
D. Semen
Answer : A

35. Highly sophisticated procedure of injecting sperm directly into the ovum is
A. GIFT
B. ZIFT
C. ICSI
D. IUI
Answer : C

36. The hormone responsible for enlargement of mammary glands at puberty is
A. Progesterone
B. Oestrogen
C. Testosterone
D. Oxytocin
Answer : B

37. Erythroblastosis foetalis is caused by fertilization between the gametes of
A. Rh -ve female and rh+ ve male
B. Rh+ ve female and rh -ve male
C. Rh+ ve female and rh+ ve male
D. Rh~ ve female and rh -ve male
Answer : A

38. Correct sequence of hormone secretion from beginning of menstruation is ...
A. FSH, progesterone, estrogen
B. Estrogen, fsh, progesterone
C. FSH, estrogen, progesterone
D. Estrogen, progesterone, FSH
Answer : C

39. After fertilization, implantation of human embryo takes place on
A. 10 th day
B. 14 th day
C. 7 th day
D. 3 rd day
Answer : C

40. Emergency contraceptives may prevent pregnancy if used within 72 hrs of
A. Menstruation
B. Fertilization
C. Ovulation
D. Coitus
Answer : D

41. A marriage between man with normal vision and colour blind woman will give birth to
A. Colour blind sons and 50% carrier daughter
B. 50% colourblind sons and 50% carrier daughter
C. Normal males and carrier daughters
D. Colour blind sons and carrier daughters.
Answer : D

42. The first milk which comes out just after child birth is known as .
A. Colostrum
B. Prolactin
C. Hind milk
D. Lactogen
Answer : A

43. The number of chromosomes present in sperms
A. 46
B. 23
C. 23 + X
D. 23+ Y
Answer : B

44. Amniotic fluid protects the foetus from ...
A. Shock
B. Abortion
C. Degeneration
D. Disease
Answer : A

45. The embryonic stage that resembles a mulberry fruit is
A. Nerula
B. Gastrula
C. Morula
D. Blastula
Answer : C

46. Albinism is a congenital disorder resulting from the lack of which enzyme?
A. Tyrosinase
B. Xanthine oxidase
C. Catalase
D. Fructokinase.
Answer : A

47. Name the pituitary hormone that regulates sertoli cells
A. Prolactin
B. LH
C. FSH
D. Oxytocin
Answer : C

48. Thick layer which surrounds the ovum is ...
A. Zona pellucida
B. Membrana granulosa
C. Corona radiata
D. Theca interna
Answer : A

49. What is Hirsuitism in females? (Usually with Poly cystic ovarian disease)
A. Unusually tall
B. Abnormal growth of facial and body hair
C. Abnormal voice
D. Short stature
Answer : B

50. The surgical method of contraception in males
A. Hysterectomy
B. Vasectomy
C. Castration
D. Circumcision
Answer : B