Rearrangement of layers/morphogenetic movements occur during Gastrualtion

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

A

Explanation

Gastrulation is characterised by movement of cells in small masses or sheets so as to form primary germinal layer. The cell movements that occur during gastrulation are called morphogenetic movement.