In which stage of development, the embryonic cells form the germinal layers by the movement?
A
Morula
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B
Blastula
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C
Gastrula
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D
Neurula
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Solution
The correct option is D Gastrula Gastrulation is the phase during early embryonic development, where blastula, which is single-layered gets re-organized to form a three-layer structure, called as gastrula. These three germ layers are ectoderm, mesoderm and endoderm. Gastrulation takes place after cleavage and formation of blastula and primitive streak.