Class 12 Biology MCQs Chapter – 3
61. Cytoplasm of ovum does not contain :
( A ) ribosomes
( B ) mitochondria
( C ) golgi bodies
( D ) centrosomes
Answer-( D )
62. Spermatids are transformed into spermatozoa by :
( A ) spermiation
( B ) spermatogenesis
( C ) spermiogenesis
( D ) spermatosis
Answer-( C )
63. The Father of Modern embryology is :
( A ) Schleiden and Sehwann
( B ) Hertwig
( C ) Aristotle
( D ) Von Baer
Answer-( D )
64. Cortical granules found in the egg cortex consist of :
( A ) lipid granules
( B ) proteins
( C ) glycogen
( D ) mucopolysaccharides
Answer-( A )
65. Nourishment to the developing sperms is provided by :
( A ) interstitial cells
( B ) spermatogonia
( C ) spermatocytes
( D ) sertoli cells
Answer-( D )
66. 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
Answer-( D )
67. In man by which cord testes are posterioly connected to the scrotal sac ?
( A ) Gubernaculum
( B ) Ligament
( C ) Spermatic cord
( D ) Spermatogonium
Answer – ( A )
68. Who is father of Embryology ?
( A ) Hippocrates
( B ) Pander
( C ) Aristotle
( D ) Spemann
Answer-( C )
69. In Man Vas deferns emerges from :
( A ) Cauda epididymis
( B ) Caput epididymis
( C ) corpora eavernosa
( D ) qtomus major
Answer-( A )
70. In man the sperMS are stored and nourished in :
( A ) testis
( B ) vasa efferentia
( C ) epididymis
( D ) sperUbtic cord
Answer-( C )
71.Hormone secreting cells in the testis
( A ) spermatogonia
( B ) spermato£ytes
( C ) sustentacutar cells
( D) leydig cells
Answer-( D )
72. The cutting and ligation of the vas deference in human mate for family planning is :
( A ) tubectomy
( B ) ovectorny
( C ) vasectomjf
( D ) castracGmy
Answer-( C )
73. of human semen is :
( A ) 4.5 – 5.5
( B ) 6.5-6.8
( C ) 7.3-7.5
( D ) 8.2-8.5
Answer-( C )
74. Which one is primary sex organ ?
( A ) Scrotum
( B ) Pants
( C) Testis
( D ) Prostate
Answer-( C )
75. Haeomochorial placenta is found in :
( A ) rabbit
( B ) dog
( C ) horse
( D ) human being
Answer-( D )
76. Which of the embryo has parasite mode of nutrition ?
( A ) Bird’s embryo
( B ) Amphibian embryo
( C ) Reptilian embryo
( D ) Mammalian embryo
Answer-( D )
77. 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
Answer-( B )
78. 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
Answer-( C )
79. 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
Answer-( C )
80. Gestation period in human beings is about …… days :
( A ) 200
( B ) 250
( c ) 260
( D ) 270
Answer-( D )
