Cell Wall

The cell wall is an organelle that is only in a plant cell. The cell wall has a rigid layer of a non-living, tough, yet flexible, material called cellulose. Although the cell wall is tough, it still lets in materials that are needed for the cell, such as water and oxygen. It supports and protects the inter cell from harmful substances and materials. The wall has to support the cell because if there is no support, the plant will not grow upward like a normal plant would.