Question

question 9
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which is the process of cell migration and differentiation into three primary germ layers following cleavage and implantation?
organogenesis
placentation
gastrulation
neurulation

Explanation:

Gastrulation is a key developmental process. After cleavage (cell division) and implantation (attachment of embryo to uterine wall), during gastrulation, cells migrate and differentiate into three primary germ layers (ectoderm, mesoderm, endoderm). Organogenesis is the formation of organs from these germ layers. Placentation is related to the formation of the placenta. Neurulation is the process of neural tube formation (related to nervous system development).

Answer:

C. Gastrulation