NCERT CLASS 12 | TOPIC : HUMAN REPRODUCTION | QB-1 | NEET BIOLOGY ONLINE TEST

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NCERT CLASS 12 | TOPIC : HUMAN REPRODUCTION | QB-1 | NEET BIOLOGY ONLINE TEST

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It contains 100 important questions. Choose the most correct answer. Then check your answer. Try again if there are errors. Regards : www.onlinetest.kalvisolai.com

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1 ➤ 1. Humans are ____ and ____ organisms.

(a) Sexually reproducing, oviparous (b) Asexually reproducing, ovoviviparous (c) Asexually reproducing, viviparous (d) Sexually reproducing, viviparous

2 ➤ 2. The formation of gametes is termed as

(a) Gametogamy (b) Syngamy (c) Gametogenesis (d) Gestation

3 ➤ 3. The transfer of sperms into the female genital tract is called

(a) Insemination (b) Gametogenesis (c) Fertilization (d) Gestation

4 ➤ 4. The fusion of male and female gametes is known as

(a) Insemination (b) Fertilization (c) Implantation (d) Parturition

5 ➤ 5. Match the following correctly.1. Gestation A. Fusion of male and female gametes2. Parturition B. Formation of gametes3. Gametogenesis C. Attachment to the uterine wall4. Implantation D. Delivery of the babyE. Embryonic development

(a) 1:A, 2:C, 3:B, 4:D (b) 1:E, 2:D, 3:A, 4:C (c) 1:E, 2:D, 3:B, 4:C (d) 1:C, 2:D, 3:A, 4:C

6 ➤ 6. The correct chronological order of the following events is

(a) Gametogenesis → Fertilization → Insemination → Gestation → Implantation →Parturition (b) Gametogenesis → Insemination → Fertilization → Impanation → Parturition → Gestation (c) Gametogenesis → Insemination → Fertilization → Implantation → Gestation →Parturition (d) None of these

7 ➤ 7. The following statements are true except

(a) In an individual, reproductive changes occur after puberty. (b) Sperm formation occurs even in old men. (c) Formation of ovum continues in women after fifty years. (d) Humans are sexually producing and viviparous.

8 ➤ 8. The testes are situated ____ the abdominal cavity within a pouch called ____.

(a) inside, testicular lobules (b) outside, scrotum (c) outside, vas deferens (d) inside, scrotum

9 ➤ 9. The scrotum helps in maintaining a temperature ____ lower than the internal body temperature.

(a) 1 to 1.5°C (b) 2 to 2.5°C (c) 3 to 3.5°C (d) 4 to 4.5°C

10 ➤ 10. An adult testes is oval in shape. Its width is about ____ and length is about ____ respectively.

(a) 4 to 5 cm, 2 to 3 cm (b) 2 to 5 cm, 1 to 3 cm (c) 2 to 3 cm, 4 to 5 cm (d) 2 to 5 cm, 4 to 7 cm

11 ➤ 11. What does ‘m’ represent?

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(a) Ureter (b) Ejaculatory duct (c) Bulbourethral gland (d) Urethra

12 ➤ 12. What is indicated by ‘d’ in the figure?

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(a) Urethra (b) Vas deferens (c) Vasa efferentia (d) Ureter

13 ➤ 13. What does ‘o’ represent in the figure?

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(a) Glans penis (b) Scrotum (c) Testis (d) Epididy

14 ➤ 14. What is indicated by ‘h’ in the figure?

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(a) Penis (b) Foreskin (c) Glans penis (d) Urethral meatus

15 ➤ 15. What is indicated by ‘b’ in the figure?

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(a) Prostate gland (b) Bulbourethral gland (c) Ureter (d) Seminal vesicle

16 ➤ 16. An adult testes bears ____ compartments called testicular lobules.

(a) 150 (b) 250 (c) 350 (d) 500

17 ➤ 17. Each testicular lobule contains ____ seminiferous tubule.

(a) Only three (b) Only one (c) One to three (d) More than three

18 ➤ 18. Male germ cells are known as

(a) Sperms (b) Spermatogonia (c) Spermatid (d) Sertoli cells

19 ➤ 19. Seminiferous tubules contain ____ cells for providing nutrition to sperm cells.

(a) Leydig cells (b) Interstitial cell (c) Sertoli cells (d) Germ cells

20 ➤ 20. The cells which secrete androgens are

(a) Spermatozoa (b) Interstitial cells (c) Sertoli cells (d) Germ cells

21 ➤ 21. Select the correct anatomical sequence.

(a) Seminiferous tubules → Rete testis → Vasa efferentia → Vasa deferens → Epididymis (b) Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vasa deferens (c) Seminiferous tubules → Vasa efferentia → Rete testis → Vasa deferens → Epididymis (d) None of these

22 ➤ 22. The enlarged end of penis is known as

(a) Glans (b) Foreskin (c) Urethra (d) Prostate

23 ➤ 23. If A stands for seminal vesicles, B stands for bulbourethral glands, C stands for prostate gland,then which of the following is true?

(a) A and C occurs in pair (b) A and B occur in pair (c) B and C occur in pair (d) None of these

24 ➤ 24. Seminal plasma is rich in which sugar?

(a) Sucrose (b) Glucose (c) Fructose (d) Maltose

25 ➤ 25. What is indicated by ‘e’ in this figure?

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(a) Testicular lobule (b) Testis (c) Vasa efferentia (d) Rete testis

26 ➤ 26. What is indicated by ‘c’ in the figure?

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(a) Vasa efferentia (b) Rete testis (c) Epididymis (d) Vas deferens

27 ➤ 27. What is indicated by ‘i’ in the figure?

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(a) Prostate (b) Urinary bladder (c) Seminal vesicle (d) Bulbourethral gland

28 ➤ 28. What does ‘k’ represent?

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(a) Prostate (b) Urinary bladder (c) Seminal vesicle (d) Bulbourethral gland

29 ➤ 29. What is indicated by ‘l’ in the figure?

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(a) Vas deferens (b) Ureter (c) Urethra (d) Ejaculatory duct

30 ➤ 30. The secretion of which gland helps in the lubrication of penis?

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(a) Seminal vesicle (b) Prostate (c) Bulbourethral (d) Epididymis

31 ➤ 31. Which is the primary female sex organ?

(a) Uterus (b) Ovaries (c) Oviducts (d) Vagina

32 ➤ 32. The ovaries are located

(a) One on each side of the upper abdomen (b) Two on each side of the lower abdomen (c) Two on each side of the upper abdomen (d) One on each side of the lower abdomen

33 ➤ 33. Which of the following statements about ovary is not true?

(a) Ovaries are responsible for the production of several steroid hormones. (b) Each ovary is about 4 to 6 cm in length. (c) Ovary is connected to the pelvic wall. (d) Ovary produces female gamete (Ovum).

34 ➤ 34. Ovarian stroma is enclosed by ____.

(a) Endothelium (b) Epithelium (c) Mesothelium (d) Ciliated epithelium

35 ➤ 35. The ovarian stroma is divided into zones

(a) Peripheral medulla and inner cortex (b) Peripheral epithelia and inner endothelia (c) Peripheral cortex and inner medulla (d) Peripheral endothelia and inner epithelia

36 ➤ 36. Which one of the following is not an accessory male duct in context of male reproductive system?

(a) Rete testis (b) Testes (c) Epididymis (d) Vas deferens

37 ➤ 37. Which one of the following is not a male sex accessory gland?

(a) Seminal vesicle (b) Epididymis (c) Prostate (d) bulbourethral

38 ➤ 38. The tubes which conducts ovum to the uterus are known as

(a) Fallopian tube (b) Oviduct (c) Cervical opening (d) Both (a) and (b)

39 ➤ 39. Which one of the following is not a female accessory duct?

(a) Vagina (b) Uterus (c) Oviduct (d) Ovary

40 ➤ 40. Each oviduct is about ____ long.

(a) 5 to 6 mm (b) 10 to 12 cm (c) 10 to 12 mm (d) 5 to 6 cm

41 ➤ 41. What is indicated by ‘a’ in the figure?

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(a) Sertoli cells (b) Interstitial cells (c) Spermatogonia (d) Spermatozoa

42 ➤ 42. What is indicated by ‘c’ in the figure?

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(a) Spermatozoa (b) Spermatogonia (c) Interstitial cells (d) Sertoli cells

43 ➤ 43. What does ‘b’ in the figure represent?

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(a) Interstitial cells (b) Sertoli cells (c) Spermatogonia (d) Spermatozoa

44 ➤ 44. What is indicated by ‘d’ in the figure?

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(a) Sertoli cells (b) Spermatozoa (c) Spermatogonia (d) Interstitial cells

45 ➤ 45. The funnel shaped part of fallopian tube which traps ovum is known as

(a) Isthmus (b) Ampulla (c) Infundibulum (d) Cervix

46 ➤ 46. Isthmus a part of oviduct, is a narrow lumen and joins ____.

(a) Uterus (b) Ampulla (c) Infundibulum (d) Both (a) and (b)

47 ➤ 47. The anatomical structure which succeeds infundibulum is

(a) Isthmus (b) Ampulla (c) Uterus (d) Ovary

48 ➤ 48. Finger-like projection of infundibulum are known as

(a) Cilia (b) Flagella (c) Fimbriae (d) None

49 ➤ 49. Uterus is commonly known as

(a) Birth canal (b) Womb (c) Primary female sex organ (d) Female external genitalia

50 ➤ 50. The uterus opens into vagina through ____.

(a) Ampulla (b) Isthmus (c) Cervix (d) Labia minora

51 ➤ 51. Birth canal is formed by

(a) Cervical canal + Uterus (b) Cervical canal + Vagina (c) Cervical canal + Isthmus (d) Cervical canal + Fallopian tube

52 ➤ 52. The wall of uterus is made up of ____ layers of tissue.

(a) 2 (b) 3 (c) 1 (d) 4

53 ➤ 53. External thin membranous layer of uterus is known as

(a) Pleura (b) Pericardium (c) Perimetrium (d) Periosteum

54 ➤ 54. Thick muscular layer of ____ muscle constitutes middle layer of uterus.

(a) Smooth (b) Striated (c) Intercalated (d) Voluntary

55 ➤ 55. What is indicated by ‘e’ in the figure?

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(a) Yolk sac (b) Embryo (c) Cavity of uterus (d) Placental villi

56 ➤ 56. What does ‘a’ represent in the figure?

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(a) Umbilical cord (b) Embryo (c) Yolk sac (d) Placental villi

57 ➤ 57. What does ‘d’ represent in the figure?

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(a) Embryo (b) Umbilical cord (c) Yolk sac (d) Cavity of uterus

58 ➤ 58. What does ‘b’ represent in the figure?

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(a) Cavity of uterus (b) Embryo (c) Yolk sac (d) Placental villi

59 ➤ 59. Which layer of uterus undergoes cyclic changes during menstrual cycle?

(a) Mesoderm (b) Myometrium (c) Endothelium (d) Endometrium

60 ➤ 60. The layer of uterine tissues responsible for strong contractions during childbirth is

(a) Perimetrium (b) Mesometrium (c) Mesoderm (d) Myocardium

61 ➤ 61. Of the following statements, which one is true for Mons Pubis?

(a) It is the region of pubic hair growth found in females as well as males. (b) It is a cushion of proteins covered by skin and pubic hair. (c) It is a cushion of fats covered by skin and pubic hair. (d) It is a part of female internal genitalia.

62 ➤ 62. Clitoris lies at the junction of

(a) Labia majora (b) Labia minora (c) Mons pubis (d) Pubis symphysis

63 ➤ 63. The clitoris is a tiny ____ shaped structure which lies above the urethral opening

(a) Flagellated (b) Finger like (c) Bean shaped (d) Pear

64 ➤ 64. The only statement correct about hymen is

(a) It is an opening of cervix. (b) It is a reliable indicator of virginity. (c) It is always torn after first coitus. (d) It can be broken by a sudden fall or jolt, insertion of vaginal tampon, cycling, etc.

65 ➤ 65. Cluster of cells in mammary lobes is known as

(a) Mammary duct (b) Alveoli (c) Ampulla (d) Lactiferous duct

66 ➤ 66. The terminal structure of the mammary glands through which milk is sucked out is known as

(a) Lumen of alveoli (b) Mammary duct (c) Lactiferous duct (d) Mammary lobe

67 ➤ 67. Several mammary ducts join to form

(a) Mammary lobe (b) Alveoli (c) Mammary ampulla (d) Lactiferous duct

68 ➤ 68. Immature male germ cells are known as

(a) Spermatid (b) Spermatozoa (c) Spermatogonia (d) Sperm

69 ➤ 69. Spermatogonium undergoes ____.

(a) Reduction division (b) Meiotic division (c) Mitotic division (d) None of these

70 ➤ 70. What does ‘a’ represent in the figure?

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(a) Lymph vessels (b) Blood vessels (c) Nerve fibres (d) Ligament

71 ➤ 71. What is indicated by ‘c’ in the figure?

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(a) Primary follicle (b) Second follicle (c) Tertiary follicle (d) Graafian follicle

72 ➤ 72. What does ‘f’ represent in the figure?

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(a) Antrum (b) Corpus luteum (c) Corpora cavernosa (d) Ovum

73 ➤ 73. What does ‘e’ represent in the figure?

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(a) Ovum (b) Oogonium (c) Mature follicle (d) Zona pellucida

74 ➤ 74. Each spermatogonium is ____ and has ____ number of chromosomes.

(a) n, 45 (b) 2n, 23 (c) 2n, 46 (d) n, 46

75 ➤ 75. The spermatogonia which undergo meiosis are known as

(a) Sperm (b) Spermatid (c) Secondary spermatocyte (d) Primary spermatocyte

76 ➤ 76. The difference between primary and secondary spermatocyte lies in ____.

(a) Presence/absence of a tail (b) Number of chromosomes (c) Being hormone producing/non-hormone producing (d) Primary gamete/secondary gamete in males

77 ➤ 77. Secondary spermatocytes give rise to

(a) Diploid spermatids (b) Haploid sperm (c) Diploid sperm (d) Haploid spermatid

78 ➤ 78. Sperms are synonymous with

(a) Spermatid (b) Spermatogonia (c) Primary spermatocyte (d) Spermatozoa

79 ➤ 79. Spermiogenesis is

(a) Transformation of sperm into spermatids. (b) Transformation of spermatogonia into primary spermatocyte. (c) Transformation of secondary spermatocyte into spermatids. (d) Transformation of spermatid into spermatozoa.

80 ➤ 80. After spermiogenesis, the sperm head is embedded in the ____ cells.

(a) Sertoli (b) Leydig (c) Interstitial (d) Both (a) and (b)

81 ➤ 81. The release of sperms from seminiferous tubules is known as ____.

(a) Ejaculation (b) Copulation (c) Spermiation (d) None of these

82 ➤ 82. Spermatogenesis starts at puberty due to the secretion of

(a) Luteinizing hormone (b) Gonadotropin releasing hormone (c) Follicle stimulating Hormone (d) Testosterone

83 ➤ 83. Luteinizing hormone (LH) acts on ____ cells and stimulates synthesis and secretion of ____.

(a) Leydig cells, FSH (b) Interstitial cells, androgens (c) Leydig cells, GnRH (d) None of these

84 ➤ 84. Androgens stimulate ____.

(a) Spermiation (b) Insemination (c) Spermatogenesis (d) Oogenesis

85 ➤ 85. The function of FSH in male is

(a) Act on leydig cells and stimulates secretion of factors responsible for spermiation. (b) Act on sertoli cells and stimulates secretion of factors responsible for spermatogenesis. (c) Act on interstitial cells and stimulates secretion of factors responsible for spermiogenesis. (d) Act on sertoli cells and stimulates secretion of factors responsible for spermiogenesis.

86 ➤ 86. The microscopic structure of sperm consists of

(a) Head, Neck, Tail (b) Head, Neck, Middle piece, Tail (c) Head, Middle piece, Tail (d) Neck, Middle piece, Tail

87 ➤ 87. What is indicated by ‘c’ in the figure?

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(a) Ascosome (b) Acrosome (c) Nucleosome (d) Hyaluronidase

88 ➤ 88. What does ‘d’ represent in the figure?

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(a) Nucleosome (b) Acrosome (c) Nucleus (d) Hyaluronidase

89 ➤ 89. What does ‘g’ represent in the figure?

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(a) Middle piece (b) Mitochondria (c) Neck (d) Tail

90 ➤ 90. What is indicated by ‘b’ in the figure?

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(a) Plasma membrane (b) Nuclear membrane (c) Acrosome (d) Hyaluronidase

91 ➤ 91. The sperm head contains:

(a) Antherosome (b) Acrosome (c) Arthosome (d) Ascosome

92 ➤ 92. The function of acrosome is

(a) Stimulates synthesis of ovum (b) Stimulates release of ovum (c) Stimulates fertilization of ovum (d) Stimulates degradation of ovum

93 ➤ 93. The middle piece of sperm contains cell organelles like

(a) Filaments (b) Mitochondria (c) Nucleus (d) Ribosomes

94 ➤ 94. How many sperm cells are there in an average human ejaculation?

(a) 200 to 300 billion (b) 200 to 300 million (c) 200 to 300 trillion (d) 200 to 300 lacs

95 ➤ 95. For a normal male fertility, which of the following statements is correct?

(a) 60 per cent sperm must have normal motility and 40 per cent must have normal shape. (b) 60 per cent sperm must have normal shape and 40 per cent must have acrosome. (c) 60 per cent sperm must have normal shape and 40 per cent must have vigorous motility. (d) None of these

96 ➤ 96. Semen consists of

(a) Seminal plasma + Spermatid (b) Seminal plasma + Spermatozoa (c) Seminal plasma + Spermatogonia (d) None of these

97 ➤ 97. The process of formation of mature female gamete is known as

(a) Gametogenesis (b) Spermatogenis (c) Oogenesis (d) Morphogenesis

98 ➤ 98. Oogenesis initiates after/at

(a) Fertilization (b) Puberty (c) Embryonic development (d) Time of birth

99 ➤ 99. Each female ovary consists of

(a) Millions of ova (b) Millions of primary oocytes (c) Millions of oogonia (d) Millions of secondary oocytes

100 ➤ 100. The primary oocytes are in which stage of cell division?

(a) Prophase I of mitotic division (b) Prophase I of meiotic division (c) Prophase II of meiotic division (d) Prophase II of mitotic division

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