61.
Sertoli cells are found in
A
ovaries and secrete progesterone
B
adrenal cortex and secrete adrenaline
C
seminiferous tubules and provide nutrition to germ cells
D
pancreas and secrete cholecystokinin
Answer :
seminiferous tubules and provide nutrition to germ cells
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62.
In which of the following animals the sperm can surivive for a longer period in the body of female
A
Mammals
B
Aves
C
Reptiles
D
Amphibia
Answer :
Mammals
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63.
Which following homologous structures are mismatched
A
Clitoris and penis
B
Vagina and prostatic utricl
C
Uterus and seminal vesicle
D
Fallopian tube and prostate
Answer :
Fallopian tube and prostate
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64.
Cavity formed during gastrulation and found in mature gastrula is
A
Blastocoel
B
Archenteron
C
Neurocoel
D
Pseudocoel
Answer :
Archenteron
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65.
Foetal ejection reflex in human female is induced by
A
release oxytocin from pituitary
B
fully developed foetus and placenta
C
differentiation of mammary glands
D
pressure exerted by amniotic fluid
Answer :
fully developed foetus and placenta
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66.
Which one of the following statements is incorrect about menstruation?
A
During normal menstruation about 40 ml blood is lost
B
The menstrual fluid can easily clot
C
At menopause in the female, there is especially abrupt increase in gonadotropic hormones
D
The beginning of the cycle of menstruation is called menarche
Answer :
The menstrual fluid can easily clot
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67.
Stage of embryonic development in which differentiation of cell occurs
A
Blastula
B
Morula
C
Gstrula
D
Neurula
Answer :
Gstrula
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68.
Durin cleavage, what is true abut embryo
A
Nucleocytoplasmic ratio remains unchanged
B
Size does not increase
C
These is less consumption of oxygen
D
The division is like meiosis
Answer :
Size does not increase
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69.
If mammalian ovum fails to fet fertilized, which one of the following is unlikely in this cycle
A
Estrogen secretion further decreases
B
Progesterone secrtion rapidly declines
C
Corpus lulteulml will disintegrate
D
Primary follicle starts developing
Answer :
Primary follicle starts developing
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70.
In mammals the female secondary sexual characters are developed mainly by the hormone
A
Reaxin
B
Estrogens
C
Progesterone
D
Gonadotropins
Answer :
Estrogens
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