does the wall help
Plant cell walls are semipermeable and only allow small molecules into the plant cell. This allows nutrients and water to pass through the cell wall, but doesnât allow pathogenic bacteria and viruses into the plant. In this way, cell walls protect plants from disease. Cell walls also help promote cellular communication. Oligosaccharides are parts of cell walls that are responsible for cell-to-cell signaling. These compounds can stimulate plant hormone product, protect plants from bacteria and viruses, and induce enzymatic changes within the plant cells.