Formation of which of these occurs during gastrulation of frog:
A.Blastocoel
B.Archenteron
C.Mesoderm
D.Notochord
Category: Embryo Genesis Mcqs
Egg in rabbit is:
A.Microlecithal
B.Mesolecithal
C.Polylecithal
D.Telolecithal
Tadople’s intestine differs with frog’s intestine in having:
A.Two times more length
B.1/3rd more length
C.3/4 more length
D.1/2 length
Enamel found in our tooth is ectodermal in origin whereas dentine is:
A.Totally ectodermal
B.Totally mesodermal
C.Partially endodermal
D.Partially mesodermal
Third cleavage in frog’s egg is:
A.Vertical and complete
B.Meridional and incomplete
C.Vertical and incomplete
D.Horizontal and complete
Expelling out developed foetus of vagina and vulva in mammals is termed as:
A.Parturition
B.Micturition
C.Morphogenesis
D.None of these
According to intravitum technique used by many embryologists, the presumptive ectodermal area in frog’s blastula is formed by:
A.Outermost pigmented cells of animal hemisphere
B.Innermost cells of animal hemisphere blastocoels
C.Outermost cells of vegetal hemisphere
D.Innermost cells of vegetal hemisphere
2nd cleavage in frog’s egg begins after:
A.30 minutes of 1st cleavage
B.60 minutes of 1st cleavage
C.90 minutes of 1st cleavage
D.120 minutes in frog’s egg begins after
Internal ear is derived from ectoderm of the embryo but middle ear and Eustachian tube are derived from:
A.Endoderm of the embryo
B.Mesoderm of the embryo
C.Both (a) & (b)
D.None of these
Accomodation of trophoblastic villi into uterine wall in mammals marks the:
A.Conception
B.Ovulation
C.Parturition
D.None of these
