261.
Capacitation refers to changes in the:
A
Ovum before fertilization
B
Ovum after fertilization
C
Sperm after fertilization
D
Sperm before fertilization
Answer :
Sperm before fertilization
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262.
What would happen if vasa deferentia of man are cut
A
Sperms are non nucleate
B
Spermatogenesis does not occur
C
Semen is with out sperms
D
Sperm are non motile
Answer :
Semen is with out sperms
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263.
Fertilization in humans is practically feasible only if
A
the sperms are transported into vagina just after the release of ovum in fallopian tube
B
the ovum and sperms are transported simultaneously to ampullary isthmic junction of the fallopian tube
C
the ovum and sperms are transported simultaneously to ampullary - isthmic junction of the cervix
D
the sperms are transported into cervix within 48 hrs of release of ovum in uterus
Answer :
the ovum and sperms are transported simultaneously to ampullary isthmic junction of the fallopian tube
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264.
Fertilizins are emitted by
A
immature eggs
B
mature eggs
C
sperms
D
polar bodies
Answer :
mature eggs
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265.
Which of the following is correct
A
Ectoderm - liver
B
Endoderm - Epidermis
C
Mesoderm - Brain
D
Mesoderm - Skeleton
Answer :
Mesoderm - Skeleton
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266.
Phase of menstrual cycle inhuman that lasts for7-8 days is
A
Follicular phase
B
Ovulatory phase
C
Luteal phase
D
Menstruation
Answer :
Follicular phase
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267.
Temp. of scrotum as compared to abdominal cavity is less by
A
1°
B
5°
C
3°
D
10°
Answer :
3°
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268.
If for some reason, the vasa efferentia in the human reproductive system gets blocked, the gametes will not be transported from
A
testes to epididymis
B
epididymis to vas deferens
C
ovary to uterus
D
vagina to uterus
Answer :
testes to epididymis
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269.
Nutritive cells of seminiferous tubules are
A
Leydig cells
B
Sertoli cells
C
Atretic follicular cells
D
Spermatogonial cells
Answer :
Sertoli cells
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270.
Most of visceral organs of frog's body are derived from embryonic
A
Ectoderm
B
Endoderm
C
Mesoderm
D
Ectomesoderm
Answer :
Mesoderm
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