Human reproductive system 1000+ MCQ with answer for IBPS RRB

1. Medical termination of pregnancy is safe till how many weeks of pregnancy?
A. 10 weeks
B. 12 weeks
C. 20 weeks
D. 22 weeks
Answer : B

2. Villi of human placenta develop from ..
A. Chorion
B. Allantois
C. Yolk sac
D. Amnion
Answer : A

3. The chemical of the ovum that attracts and holds sperm
A. Fertilizin
B. Antifertilizin
C. Agglutin
D. Antiagglutinin
Answer : A

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

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

6. During ovulation, for favourable sperm travel oestrogen causes
A. Cervical mucus to become stretchy and clear
B. Less cervical mucus production
C. Tenderness of cervix
D. Slight vaginal bleeding
Answer : A

7. Part of sperm that passes into ovum is
A. Tail
B. Acrosome
C. Head
D. Head, neck and middle piece
Answer : D

8. 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

9. The gonadotropic hormones are secreted by
A. Anterior pituitary
B. Posterior pituitary
C. Adrenals
D. Ovaries
Answer : A

10. The pre fertilisation process stage of sperm before entry into the ovum is called as
A. Maturation
B. Insemination
C. Capacitation
D. Fertilization
Answer : C

11. Total numbers of ovum released in the life time of a woman is approximately
A. 40
B. 400
C. 4000
D. 20000
Answer : B

12. Corpus luteum secretes
A. Lh
B. Estrogen
C. Progesterone
D. Fsh
Answer : C

13. 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

14. Cri-du-chat syndrome in humans is caused by the
A. Trisomy of 21st chromosome
B. Fertilization of an xx egg by a normal y-bearing sperm
C. Loss of half of the short arm of chromosome 5
D. Loss of half of the long arm of chromosome 5
Answer : C

15. Membrane that gives protection to embryo from external shocks is
A. Amnion
B. Allantois
C. Chorion
D. Placenta
Answer : A

16. 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

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

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

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

20. What is the name of the inner lining of the uterus?
A. Myometrium
B. Endometrium
C. Epithelium
D. Endothelium
Answer : B

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

22. In a semen analysis, the following is not acceptable as normal�
A. 25 % abnormal forms
B. 60% motility after 3 hours
C. Mild Alkaline reaction
D. Sperm count of 17 million per ml.
Answer : D

23. At the end of meiosis I, the Oocyte yields
A. Secondary Oocyte and first polar body
B. First polar body
C. Secondary Oocyte
D. Second polar body
Answer : A

24. Which layer of embryo is formed first
A. ectoderm
B. Mesoderm
C. Endoderm
D. Mesenchyma
Answer : C

25. 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

26. Forensic investigation of rape case focuses on the presence of fructose in female reproductive system, the only part of the human body producing fructose is
A. Cowper's gland
B. Prostate gland
C. Testes
D. Seminal vesicle
Answer : D

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

28. Normal sperm count is
A. 40 to 300 million per ml
B. 10 to 20 million per ml
C. < 10 million per ml
D. 200 million per ml
Answer : A

29. 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

30. Which part of the foetus is developed from mesoderm?
A. Heart and notochord
B. Heart and brain
C. Spinal cord and notochord
D. Brain and notochord
Answer : A

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

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

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

34. 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

35. The rate of active movement of sperm is ...
A. 1.5 -3.0 mm/min
B. 1.5 - 3.0 cm/min
C. 1.5 -3.0 m/min
D. 1.5 -3.0 m/hr
Answer : A

36. Epididymis is ...
A. A long coiled tube between vasa efferentia and vas deferens
B. Network of sinuses between seminiferous tubules and efferentia
C. Connection between vas deferens and seminal vesicle
D. Intermediate structure between the testis and vasa efferentia
Answer : A

37. Pregnancy is ascertained by
A. Insemination
B. Copulation
C. Implantation
D. Capacitation
Answer : C

38. Acrosome of sperm contains ...
A. Hyaluronidase and acrosin
B. Hyaluronic acid and acrosin
C. Hippuric acid and uric acid
D. Testosterone
Answer : A

39. 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

40. The three primary germ layers, ectoderm, endoderm and mesoderm are differentiated during
A. Blastulation
B. Neurulation
C. Gastrulation
D. Organogenesis
Answer : C

41. The most important region of the decidua for the nourishment of the conceptus is the deciduas
A. Frondosum
B. Capsularis
C. Parietalis
D. Basalis
Answer : D

42. Human female reaches menopause at the age of about ...
A. 25 years
B. 35 years
C. 50 years
D. 70 years
Answer : C

43. 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

44. 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

45. Acrosome occurs in the sperm in
A. Tail part
B. Behind the nucleus
C. Middle piece
D. Tip
Answer : D

46. Which cells provide nutrition to the sperms?
A. Sertoli cells
B. Leydig cells
C. Crypt cells
D. Semniferous tubules
Answer : A

47. 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

48. Which part of the ovary act as an endocrine gland in human beings
A. Stroma
B. Vitteline membrane
C. Graffian follicle
D. Epithelium
Answer : C

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

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