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Embryology Gastrulation - Questions and Answers

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16. In a developing embryo, the nervous system is derived from the
A. Ectoderm
B. Endoderm
C. Mesoderm
D. Blastoderm
Explanation:
17. When the micromeres divide rapidly and grow over the macromeres, it is known as
A. Epiboly
B. Involution
C. Delamination
D. Gastrulation
Explanation:
18. The formation of brain and different sensory organs is called
A. Metagenesis
B. Neurogenesis
C. Notogenesis
D. Mesogenesis
Explanation:
19. Morphogenetic movements occur during
A. Cleavage
B. Blastulation
C. Fertilization
D. Gastrulation
Explanation:
20. Which is the first indication of gastrulation in frog
A. Formation of germ ring
B. Formation of gery crescent
C. Formation of germ layers
D. Formation of archenteron
Explanation:
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