Why animals do not have a cell wall?

Asked by  | 10th Apr, 2008, 02:47: PM

Expert Answer:

The lack of a rigid cell wall allowed animals to develop a greater diversity of cell types, tissues, and organs. Specialized cells that formed nerves and muscles—tissues impossible for plants to evolve—gave these organisms mobility.

Answered by  | 11th Apr, 2008, 08:23: PM

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