Which of the following parts in adrenal gland are mesodermal in origin:
A.Medulla
B.Cortex
C.Both (a) & (b)
D.None of these
Category: Embryo Genesis Mcqs
Gray crescent is present in the:
A.Fertilized egg of the frog
B.Unfertilized egg of the frog
C.Sperm of the frog
D.None of these
Blastopore is found in:
A.Morula
B.Blastula
C.Gastrula
D.Neurula
Presumptive endoderm is formed in frog’s blastula by:
A.Most of the animal hemisphere
B.Most of the vegetal hemisphere
C.Partially by both of these
D.None of these
Gastrula is a stage in the the development of frog in which embryo possesses:
A.Ectoderm, mesoderm and endoderm layers
B.Ectoderm layer surrounding the blastocoel
C.Ectoderm and endoderm layers forming archenteron
D.Ectoderm, mesoderm and endoderm layers alongwith a rudimentary nervous system
Placenta in man is:
A.Epitheliochorial type
B.Haemochorial type
C.Haemoendothelial types
D.None of these
Archenteron is a cavity found in which of the following stages of frog’s development:
A.Morula
B.Blastula
C.Gastrula
D.None of these
Which of these organs do not undergo any special change during metamorphosis:
A.Respiratory
B.Nervous
C.Digestive
D.Circulatory
Tadpole in frog hatches out in about:
A.50 hours of oviposition
B.110 hours of oviposition
C.200 hours of oviposition
D.250 hours of voiposition
