In most triploblasts after embryonic development the three layers are represented as___________?
A. Separate layers of cells
B. Structures formed from them
C. Structures associated with them
D. Their functions in body
In most triploblasts after embryonic development the three layers are represented as___________?
A. Separate layers of cells
B. Structures formed from them
C. Structures associated with them
D. Their functions in body