421.
Blastocoel of embryo is
A
Lysigenous cavity
B
Schizogenous cavity
C
True coelom
D
None of the above
Answer :
Schizogenous cavity
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422.
Location and secretion of Leydig's cells are
A
Liver - cholesterol
B
Ovary - estrogen
C
Testes - testosterone
D
Pancreas - glucagon
Answer :
Testes - testosterone
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423.
What happens in cells of embryo during cleavage
A
Decrease in cytoplasm
B
Increase in cytoplasm and decrease in nuclear material
C
Decrease in both
D
Both remains constant
Answer :
Decrease in cytoplasm
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424.
Supporting cells found in the germinal epithelium of testis are called
A
Interstitial cells of leydig
B
Sertolicells
C
Granular cells
D
Phagocytes
Answer :
Sertolicells
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425.
Which of following animals do nt show parental care over their youngs
A
Mammals
B
Lizards
C
Fowls
D
Earwigs
Answer :
Fowls
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426.
Which of the following events is not associated with ovulation in human female?
A
Full development of Graffin follicle
B
Release of secondary oocyte
C
LH surge
D
Decrease in estradiol
Answer :
Decrease in estradiol
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427.
Acrosome formation is spermatogenesis occurs in which stage
A
First meiotic division
B
Second meiotic division
C
Growth phage
D
Spermiogenesis
Answer :
Spermiogenesis
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428.
Select the correct option describing gonadotropin activity in a normal pregnant female:
A
High level of FSH and LH stimulates the thickening of endometrium
B
High level of FSH and LH facilitate implantation of the embryo
C
High level of hCG stimulates the synthesis of estrogen and progesterone
D
High level of hCG stimulates the thickening of endometrium
Answer :
High level of hCG stimulates the synthesis of estrogen and progesterone
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429.
Gastrulation is a process of
A
Formation of archenteron
B
Migration of prospective endomesodermal cells
C
Differentiation of three primary germ layers
D
All of the above
Answer :
All of the above
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430.
Placenta is the region where
A
Foetus is attached to mother by spermatic coed
B
Foetus is provided with mother’s blood
C
Foetus receives nourishment from mother’s blood
D
Foetus is covered by membranes.
Answer :
Foetus receives nourishment from mother’s blood
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