In development of animals, but not in development of plants, ________.
A) gene expression in developing embryonic tissues is closely regulated
B) orientation of cells and tissues is critical for proper development
C) differentiation of cells is directed and maintained by cascades of molecular signals
D) once cells are differentiated, they cannot de-differentiate and re-differentiate

Question

Quizplus · Accepted Answer

In plants, cells retain a remarkable ability to de-differentiate and re-differentiate, allowing them to regenerate parts and sometimes entire organisms from differentiated cells. In contrast, animal cells are generally more restricted in their ability to revert to a pluripotent state and differentiate into a different cell type once they have specialized.

In Development of Animals, but Not in Development of Plants