One of the most important ways that plant cells differ from animal cells is the presence of cell walls.

Here's why this is important:

* Structure and Support: Cell walls provide rigidity and support to plant cells, allowing plants to grow upright and maintain their shape. This is crucial for plants as they lack a skeletal system like animals.

* Protection: The cell wall acts as a protective barrier, shielding the cell from external threats and changes in osmotic pressure.

* Turgor Pressure: Cell walls are essential for maintaining turgor pressure, which is the pressure exerted by the fluid inside the cell against the cell wall. This pressure helps plants maintain their shape and allows them to stand erect.

While animal cells have cell membranes, they lack the rigid cell walls found in plant cells.