Here's why:
* Rigidity: The cell wall is a tough, rigid outer layer made primarily of cellulose. This provides structural support, giving the plant its shape and preventing it from collapsing.
* Protection: The cell wall acts as a barrier, protecting the delicate cell membrane and internal structures from damage.
* Shape Maintenance: The cell wall helps maintain the shape of the plant cell, which is crucial for the plant's overall structure and function.
* Water Regulation: The cell wall helps regulate the movement of water into and out of the cell.
While other structures like the vacuole contribute to cell shape and turgor pressure, the cell wall is the primary structural support for all plant cells.
