481.
Mammalian follicle was first described by
A
Leeuvenhock
B
R. D Graaf
C
Spallangi
D
Van Baer
Answer :
R. D Graaf
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482.
Release of egg from ovary is called
A
Ovipary
B
Ovulation
C
Htching
D
All of the above
Answer :
Ovulation
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483.
Development of animal by asexual reproduciton is called
A
Ontogenesis
B
Embryogeneis
C
Blastogenesis
D
Morphallaxis
Answer :
Blastogenesis
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484.
Polyspermy is common in
A
Frog
B
Man
C
Birds
D
Sea-urhin
Answer :
Birds
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485.
Cells formed as a result of cleavage are called
A
Megameres
B
Micromeres
C
Blastoderm
D
Blastomeres
Answer :
Blastomeres
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486.
Testicular degeration and other disorders of reproductive system in mammals are due to the deficiency of
A
Vitamin D
B
Vitamin B
C
Vitamin K
D
Vitamin E
Answer :
Vitamin E
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487.
The acrosome plays a role in
A
Fusion of nuclei of gametes
B
Motility of sperm
C
Penetration of sperm in to ovum
D
LAll of the above
Answer :
Penetration of sperm in to ovum
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488.
Monoestrous cycle animals may have
A
One ovulation each month
B
One egg
C
One breeding season in a year
D
One menses each month
Answer :
One breeding season in a year
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489.
Polyspermy is normally prevented by
A
The fertilizin and antifertilizin reaction
B
Repulsion of excess number of sperm by ova
C
In ability of some sperm to penetrateova
D
Formation of fertilization membrane
Answer :
Formation of fertilization membrane
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490.
Sertoli cells are involved in
A
Respiration
B
Nutrition of sperms
C
Excretion
D
Development of sex organs
Answer :
Nutrition of sperms
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