271.
Which of these is not an important component of initiation of parturition in humans?
A
Synthesis of prostaglandins
B
Release of oxytocin
C
Release of prolactin
D
Increase in estrogen and progesterone ratio
Answer :
Release of prolactin
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272.
Greater development of sperms in rabbit takes place in
A
Testes
B
Vasa- efferentia
C
Epidisymis
D
Spermatic cord
Answer :
Epidisymis
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273.
Antifertilizin is present on
A
Egg
B
Tail
C
Ovum
D
Spermatozoa
Answer :
Spermatozoa
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274.
Which of the following cells during gametogenesis is normally diploid?
A
Spermatid
B
Spermatogonia
C
Secondary polar body
D
Primary polar body
Answer :
Primary polar body
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275.
The number of foetal membranes is man is
A
1
B
3
C
4
D
0
Answer :
4
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276.
Vitellogenesis is the process of
A
Formation of vitelline membrane around the developing egg cell
B
Formation of yolk sac membrane around the yolk mass during the development reptiles and birds
C
Synthesis of yolk
D
Both A and C
Answer :
Synthesis of yolk
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277.
The whole nervous system including neuron in frog and other vertebrates is derived from
A
Ectoderm
B
Endoderm
C
Mesoderm
D
All of the above
Answer :
Ectoderm
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278.
Oocyte is liberated from ovary under the influence of LH, after completing
A
Metosis and before liberating polar bodies
B
Meiosis I and before liberating second polar bodies
C
Meiosis
D
Meiosis II after release of firsdt polar body
Answer :
Meiosis I and before liberating second polar bodies
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279.
The functional maturation of sperms takes place in
A
Oviduct
B
Epididymis
C
Vagina
D
All of the above
Answer :
Epididymis
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280.
Identical twins will be produced when
A
One spermatozoan fertilizes two ova
B
One ovum is fertilized by two spermatozoa
C
Two eggs are fertilized
D
One fertilized egg divides into the blastomers and they becomes separae
Answer :
One fertilized egg divides into the blastomers and they becomes separae
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