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Question

Rearrangement of layers/ morphogenetic movements occur during

A
Gastrulation
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B
Blastulation
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C
Morulation
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D
Organogenesis
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Solution

The correct option is A Gastrulation
During gastrulation, the three germ layers are formed. The cells of the gastrula undergo morphogenetic movements and thus forms different layers. Rearrangement of these layers also occurs during gastrulation.
The formation of archenteron (the cavity of gastrula) takes place during gastrulation.
So, the correct option is ' Gastrulation'

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