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Class 12 Biology Objective In English Chapter – 3 Human Reproduction
1. The anterior portion of sperm is covered by a cap like structure known as
( A ) Acrosome
( B ) Mesosome
( C ) Episome
( D ) Spherosome
Ans-( A )
2. Uterus is related to
( A ) Male Reproductive system
( B ) Female Reproductive system
( C ) Plant Reproductive system
( D ) All of these
Ans-( B )
3. Cessation of menstrual cycle in a woman is called :
( A ) Menarche
( B ) Menopause
( C ) Ovulation
( D ) Lactation
Ans-( B )
4.How many sperms will form from 4 primary spermatocytes ?
( A ) 4
( B ) 1
( C ) 16
( D ) 32
Ans-( C )
5. How many sperms will form from 1secondary spermatocyte ?
( A ) Two
( B ) Three
( C ) Four
( D ) Sixteen
Ans-( A )
6.How many ovum is produced from 1 primary oocyte in human female ?
( A ) Two
( B ) One
( C ) Four
( D ) None
Ans-( B )
7. Testes descent into scrotum in mammals for :
( A ) Spermatogenesis
( B ) Fertilization
( C ) Development of sex organs
( D ) Development of visceral organs
Ans-( A )
8 . Sperms produce an enzymatic substance for dissolving egg , coverings . It is called :
( A ) Hyaluronic acid
( B ) Hyaluronidase
( C ) Androgamone
( D ) Diastase
Ans-( B )
9. Antrum is cavity of :
( A ) Ovary
( B ) Graffian follicle
( C ) Blastula
( D ) Gastrula
Ans-( B )
10. Secondary sexual characters in Females develop in response to hormone :
( A ) Relaxin
( B ) Progesterone
( C ) Estrogen
( D ) Gonadotropin
Ans-( C )
11. Hormone responsible for ovulation and development of corpus luteum is :
( A ) FSH
( B ) LH
( C ) LTH
( D ) ICSH
Ans-( B )
12. Bartholin’s glands occur on :
( A ) Sides of vas deferens
( B ) Sides of vagina
( C ) Tail of birds
( D ) Head of amphibians
Ans-( B )
13. Phase of menstrual cycle that lasts for 7-8 days is :
( A ) Menstruation
( B ) Luteal phase
( C ) Ovulatory phase
( D ) Follicular phase
Ans-( D )
14. Which is not mesodermal in origin :
( A ) Nervous system
( B ) Circulatory system
( C ) Muscular system
( D ) Skeletal tissue
Ans-( A )
15. In uterus , endometrium increases in thickness in response to :
( A ) Oxytocin
( B ) Oestrogen
( C ) LH
( D ) Relaxin
Ans-( B )
16. Which is related to males ?
( A ) Oral pill
( B ) Tubectomy
( C ) Vasectomy
( D ) None of the above
Ans-( C )
17. Which of the following represents a condition where the motility of sperms is highly reduced ?
( A ) Azospermia
( B ) Polyspermy
( C ) Oligospermia
( D ) Asthenospermia
Ans-( D )
18. Regulation of spermatogenesis is done by :
( A ) Oestrogen
( B ) L.H.
( C ) Androgen
( D ) None of these
Ans-( C )
19. Endosperm becomes hard and cellulosic in :
( A ) Mango
( B ) Coconut
( C ) Phytelephas ( = Ivory palm )
( D ) Castor
Ans-( C )
20. Milky water of green tender cocoo called coconut milk is :
( A ) liquid chalaza
( B ) liquid nucellus
( C ) degenerated liquid free nuclear endosperm
( D ) liquid female gametophyte
Ans-( C )
21. Sertoli cells are regulated by Pituitary hormone known as :
( A ) LH
( B ) FSH
( C ) GHD
( D ) Prolactin
Ans-( B )
22. Which part of ovary in mammals acts as an endocrine gland after ovulation ?
( A ) Stroma
( B ) Germinal Epithelium
( C ) Vitelline membrane
( D ) Graffian follicle
Ans-( D )
23. Name the hormone that has no role in menstruation
( A ) LH
( B ) FSH
( C ) Estradiol
( D ) TSH
Ans-( D )
24. Foetus gets nourishment and oxygen through
( A ) allantois
( B ) placenta
( C ) yolk sac
( D ) chorion
Ans-( B )
25. After ovulation Graffian follicle regresses into :
( A ) Corpus atresia
( B ) Corpus callosum
( C ) Corpus luteum
( D ) Corpus albicans
Ans-( C )
26. Seminal plasma in human is rich in
( A ) Fructose and Calcium but no enzymes
( B ) Glucose and certain enzymes but no calcium
( C ) Fructose and certain enzymes but poor in calcium
( D ) Fructose , Calcium & certain enzymes
Ans-( C )
27. The process of release of sperms from sertoli cells into cavity of seminiferous tubules is called :
( A ) Spermiogenesis
( B ) Spermatogenesis
( C ) Spermiation
( D ) None
Ans-( C )
28. Urine test during pregnancy determines the presence of
( A ) hcG
( B ) ostrogen
( C ) Progesterone
( D ) LH
Ans-( A )
29. When released from ovary , human egg contains
( A ) one Y chromosome
( B ) two X chromosome
( C ) one X chromosome
( D ) XY chromosome
Ans-( C )
30. In a sperm the nucleus containing genetic part is situated in :
( A ) Acrosome
( B ) Head
( C ) Middle piece
( D ) Tail
Ans-( B )
31. A sperm without Acrosome can not :
( A ) get food supply
( B ) move
( C ) penetrate into the seminal vesicle
( D ) penetrate into the ovum
Ans-( D )
32. Conversion of spermatid into a spermatozoon is called :
( A ) spermatogenesis
( B ) spermeiogenesis
( C ) spermatocytogenesis
( D ) gametogenesis
Ans-( B )
33. A primary spermatocyte is :
( A ) diploid
( B ) haploid
( C ) triploid
( D ) polyploid
Ans-( A )
34. Acrosome formation takes place from
( A ) centriole
( B ) golgibody
( C ) mitochondria
( D ) nucleus
Ans-( B )
35. Sperm tail shows the arrangement of microtubules which is :
( A ) 9 + 0
( B ) 9 + 2
( C ) 7 + 0
( D ) 7 + 2
Ans-( A )
36. One of the last event in the transformation of the spermatid into sperm is :
( A ) Acrosome formation
( B ) Microtubules formation
( C ) Tail formation
( D ) Elimination of cytoplasm
Ans-( D )
37. In a mammalian sperm , spirally arranged mitochondria ( Nebenkern ) around the axial filament are present in the region :
( A ) head
( B ) middle piece
( C ) end piece of tail
( D ) main piece of tail
Ans-( B )
38. How many secondary spermatocytes will be required to form 400 spermatozoa ?
( A ) 100
( B ) 200
( C ) 40
( D ) 400
Ans-( B )
39. Human eggs are almost free of yolk and are called :
( A ) microlecithal
( B ) alecithal
( C ) macrolecithal
( D ) mesolecithal
Ans-( B )
40. In telolecithal eggs , yolk is present :
( A ) on both sides
( B ) on one side
( C ) in centre
( D ) throughout the egg
Ans-( B )
41. Autogamy is favoured by :
( A ) homogamy
( B ) heterostyle
( C ) dichogamy
( D ) self sterility
Ans-( A )
42. Which is true for cleavage ?
( A ) Size of embryo increases
( B ) Size of cells decreases
( C ) Size of cells increases
( D ) Size of embryo decreases
Ans-( B )
43. Which type of cleavage occurs in the zygote of human female ?
( A ) Holoblastic and equal
( B ) Meroblastic
( C ) Holoblastic and unequal
( D ) Diploblastic
Ans-( A )
44. Which one of the following events is correctly matched with the time period in a normal menstrual cycle ?
( A ) Release of egg : 5th day
( B ) Endometrium regenerates : 5 -10 days
( C ) Endometrium secretes nutrients for implantation : 11-18 days
( D ) Rise in progesteron level : 1-15 days
Ans-( B )
45. Sertoli cells are regulated by the pituitary hormone known as :
( A ) GH
( B ) Prolactin
( C ) LH
( D ) FSH
Ans-( C )
46. Withdrawl of which of the following hormones is the immediate cause of menstruation ?
( A ) FSH
( B ) FSH – RH
( B ) Progesterone
( D ) Estrogen
Ans-( C )
47. Ascial filament of the sperm is formed by :
( A ) proximal centriole
( B ) distal centriole
( C ) mitochondria
( D ) nucleus
Ans-( B )
48. Which type / types of placenta is are found in human beings ?
( A ) chorionic
( B ) haemochorial
( C ) metadiscoidal
( D ) all of the above
Ans-( D )
49. Fertilization does not occur in the absence of :
( A ) Sodium
( B ) Potassium
( C ) Calcium
( D ) Iron
Ans-( C )
Class 12 Biology Objective In English Chapter – 3 Human Reproduction
50. Colostrum is the first milk which comes from the mammary glands of the mother . Colostrum contains antibody :
( A ) IgA
( B ) IgD
( C ) IgE
( D ) IgG
Ans-( A )
51. Prostaglandins are :
( A ) proteins
( B ) carbohydrates
( C ) lipids
( D ) unsaturated fatty acids
Ans-( D )
52. Fructose produced by seminal vesicles provides forensic test for :
( A ) syphilis
( B ) AIDS
( C ) rape
( D ) hepatitis
Ans-( C )
53. Spermatogenesis is promoted by :
( A ) FSH
( B ) MSH
( C ) ACTH
( D ) hCG
Ans-( A )
54. Spermatogenesis is promoted by :
( A ) 1
( B ) 4
( C) 16
( D ) 32
Ans-( C )
55. Cytoplasm of ovum does not contain :
( A ) ribosomes
( B ) mitochondria
( C ) golgi bodies
( D ) centrosomes
Ans-( D )
56. Spermatids are transformed into spermatozoa by :
( A ) spermiation
( B ) spermatogenesis
( C ) spermiogenesis
( D ) spermatosis
Ans-( C )
57. The Father of Modern embryology is :
( A ) Schleiden and Sehwann
( B ) Hertwig
( C ) Aristotle
( D ) Von Baer
Ans-( D )
58. Cortical granules found in the egg cortex consist of :
( A ) lipid granules
( B ) proteins
( C ) glycogen
( D ) mucopolysaccharides
Ans-( A )
59. The part of fallopian tube closest to the ovary is :
( A ) isthumus
( B ) infundibulum
( C ) cervix
( D ) ampulla
Ans-( B )
60. In human female the blastocyst :
( A ) forms placenta even before implantation
( B ) gets implanted into uterus 3 days after ovulation
( C ) gets nutrition from uterine endometrial secretion only after implantation
( D ) gets implanted in endometrium by the trophoblast cell
Ans-( D )
61. Secretion from which one of the following are rich in fructose , calcium and some enzymes ?
( A ) Male accessory glands
( B ) Liver
( C ) Pancreas
( D ) Salivary gland
Ans-( A )
62. Andropause of male human beings is similar to :
( A ) androgen binding protein
( B ) female menopause
( C ) prostaglandin
( D ) androgen
Ans-( B )
63. Yolk synthesis is known as :
( A ) Histogenesis
( B ) Glycogenesis
( C ) Oogenesis
( D ) Vitellogenesis
Ans-( D )
64. Ovulation occurs under the influence of :
( A ) LH
( B ) FSH
( C ) Estrogen
( D ) Progesterone
Ans-( A )
65. Growth and maturation of Graafian follicle is controlled by
( A ) FSH – LH
( B ) FSH – LTH
( C ) ACTH – LH
( D ) GH – ADH
Ans-( A )
66. Antifertilizin is a protein found in :
( A ) egg membrane
( B ) vitelline membrane
( C ) middle piece of sperm
( D ) the plasma membrane of anterior tip of sperm head
Ans-( D )
67. Fertilizin is a glycoprotein found on :
( A ) eggs
( B ) sperms
( C ) walls of uterus
( D ) walls of seminal vesicle
Ans-( A )
68. The tail of a sperm fertilizing an ovum
( A ) enters of the ovum
( B ) is left behind outside the egg
( C ) enters up to egg’s plasma
( D ) enters up to cytoplasm of ovum
Ans-( B )
69. On fertilization , the urine of the mother contains
( A ) LH
( B ) Progesterone
( C ) FSH
( D ) HCG
Ans-( D )
70. Cleavage differs from mitosis in that it :
( A ) occurs in all body cells
( B ) occurs in zygote
( C ) result into identical daughter cells
( D ) occurs only in invertebrates
Ans-( B )
71. Mammalian egg’s cleavage is :
( A ) meroblastic
( B ) holoblastic
( C ) unequal
( D ) spiral
Ans-( B )
72. Indeterminate ( nonmosaic ) cleavage is found in :
( A ) Earthworm
( B ) Chordates
( C ) Nereis
( D ) Leech
Ans-( B )
73. In human female the fertilized egg gets implanted in uterus :
( A ) eggs membrane
( A )after two months of fertilization
( B ) after one month of fertilization
( C ) after 3 weeks of fertilization
( D ) after about 7 days of fertilization
Ans-( D )
74. Inner cell mass is a precursor of the :
( A ) ectoderm
( B ) mesoderm
( C ) endoderm
( D ) embryo proper
Ans-( D )
75. From the egg in gastrula stage if you remove all cells which form endoderm , the new organism will lack :
( A ) eyes
( B ) heart
( C ) eyes and brain
( D ) visceral organs 6
Ans-( D )
76.The most commonly used marker enzyme in clinical diagnosis of prostate cancer is :
( A ) amylase
( B ) alkaline phosphatase
( C ) Y – GTPase
( D ) acid phosphatase
Ans-( D )
77. The signals for parturition origiate from :
( A ) placenta only
( B ) placenta as well as fully developed foetus
( C ) oxytocin released from maternal pituitary
( D ) fully developed foetus only
Ans-( B )
78. The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy ?
( A ) Fourth month
( B ) Fifth month
( C ) Sixth month
( D ) Third month
Ans-( B )
79. Rupturing of follicles and discharge of ova is called :
( A ) Copulation
( B ) Conjugation
( C ) Ovulation
( D ) Oviposition
Ans-( C )
80. Nourishment to the developing sperms is provided by :
( A ) interstitial cells
( B ) spermatogonia
( C ) spermatocytes
( D ) sertoli cells
Ans-( D )
81. Cryptorchidism is a condition in which testes are :
( A ) surgically removed
( B ) not developed in foetus
( C ) unable to produce sperms
( D ) unable to descend in scrotum
Ans-( D )
82. In man by which cord testes are posterioly connected to the scrotal sac ?
( A ) Gubernaculum
( B ) Ligament
( C ) Spermatic cord
( D ) Spermatogonium
Ans – ( A )
83. Who is father of Embryology ?
( A ) Hippocrates
( B ) Pander
( C ) Aristotle
( D ) Spemann
Ans-( C )
84. In Man Vas deferns emerges from :
( A ) Cauda epididymis
( B ) Caput epididymis
( C ) corpora eavernosa
( D ) qtomus major
Ans-( A )
85. In man the sperMS are stored and nourished in :
( A ) testis
( B ) vasa efferentia
( C ) epididymis
( D ) sperUbtic cord
Ans-( C )
86.Hormone secreting cells in the testis
( A ) spermatogonia
( B ) spermato£ytes
( C ) sustentacutar cells
( D) leydig cells
Ans-( D )
87. The cutting and ligation of the vas deference in human mate for family planning is :
( A ) tubectomy
( B ) ovectorny
( C ) vasectomjf
( D ) castracGmy
Ans-( C )
Class 12 Biology Objective In English Chapter – 3 Human Reproduction
88. of human semen is :
( A ) 4.5 – 5.5
( B ) 6.5-6.8
( C ) 7.3-7.5
( D ) 8.2-8.5
Ans-( C )
89. Which one is primary sex organ ?
( A ) Scrotum
( B ) Pants
( C) Testis
( D ) Prostate
Ans-( C )
90. Life span of ovuU is :
( A ) 48 hours
( B ) 12 hours
( C ) 24 hours
( D ) 8 hours
Ans-( C )
91. The endometrium is the lining of :
( A ) Bladder
( B ) Vagina
( C) Uterus
( D ) Oviduct
Ans-( C )
92 . In female, gland homologous to prostate band of male is :
( A ) Perineal gland
( B ) Milk gland
( C ) Paraurethral gland
( D ) Cowper’s gland
Ans-( C )
93. Aria is edible part of
( A)Annona
( B ) Apple
( C ) Orange
( D ) All of these
Ans-( A )
94. Hermaphrodite organism is
( A ) Snake
( B ) Hen
( C ) Both (A) and (B)
( D ) Earthworm
Ans-( D )
95. Which one is diploid structure ?
( A ) Sperm
( B ) Ovum
( C ) Zygote
( D ) of these
Ans-( C )
96 Hydrophilic pollination occurs in
( A ) Eichornea
( B ) Lotus
( C ) Hydrilla
( D ) Both (A ) and (B )
Ans-( C )
97. The total number of eggs produced by a healthy human female during life time :
( A ) 4000
( B ) 400
( C ) 40
( D ) 365
Ans-( B )
98. The lens and the retina of the vertebrate eye are developed from :
( A ) ectoderm only
( B ) endoderm only
( C ) partly from ectoderm and partly from endoderm
( D ) mesoderm only
Ans-( A )
99. Digestive system , liver and trachea are formed from
( A ) archenteron
( B ) blastocoel
( C ) endoderm
( D ) ectoderm
Ans-( C )
100. The mesoderm gives rise to all the following structures in a fully developed animal except :
( A ) muscular system
( B ) nervous system
( C ) circulatory system
( D ) gonads
Ans-( B )
101. Blood flowing in umbilical cord of mammalian embryo is :
( A ) 50 % maternal and 50 % foetal
( B ) 100 % foetal
( C ) 100 % maternal
( D ) 75 % maternal and 25 % foetal
Ans-( B )
102. Before implantation the embryo obtains its nutrition from :
( A ) Ovary
( B ) oviducts
( C ) uterine secretions
( D ) its own yolk
Ans-( D )
103. Haeomochorial placenta is found in :
( A ) rabbit
( B ) dog
( C ) horse
( D ) human being
Ans-( D )
104. Which of the embryo has parasite mode of nutrition ?
( A ) Bird’s embryo
( B ) Amphibian embryo
( C ) Reptilian embryo
( D ) Mammalian embryo
Ans-( D )
105. Decidua is expelled from the uterus :
( A ) along the child
( B ) after the birth of child
( C ) before the birth of child
( D ) during menstruation
Ans-( B )
106. Gestation is the period between :
( A ) birth and puberty
( B ) foetus forming and being
( C ) fertilization and the birth of the young
( D ) fertilization and implantation
Ans-( C )
107. Implantation of egg is followed by parturition which means :
( A ) separation of blastos
( B ) development of embryo
( C ) process of birth
( D ) contraction of uterus
Ans-( C )
108. Gestation period in human beings is about …… days :
( A ) 200
( B ) 250
( c ) 260
( D ) 270
Ans-( D )
109. Which is absent in male ?
( A ) Bulbourethral glands
( B ) Bartholin’s glands
( C ) Prostate glands
( D ) Cowper’s glands
Ans-( B )
110. Cervix occurs in :
( A ) Kidney
( B ) fallopian tube
( C ) between body of uterus and vagina
( D ) epididymis
Ans-( C )
111. Estrogen is secreted by :
( A ) corpus luteum
( B ) membranous granulosa of Graffian follicle
( C ) germinal epithelium of ovary
( D ) pitituary Gland
Ans-( B )
112. Hysteroctomy is surgical removal of :
( A ) Vagina
( B ) Oviduct
( C ) Uterus
( D ) Ovary
Ans-( C )
113.Clitoris in Human female is :
( A ) homologous to penis of male
( B ) analogous to penis of male
( C ) vestige al structure
( D ) homologous to prostate
Ans-( A )
114. Mammary glands are modified :
( A ) oil gland
( B ) sweat gland
( C ) cowper’s gland
( D ) bertholin’s gland
Ans-( B )
