Britannica
Sources used in this answer
How does the plant cell wall help prevent a cell from bursting after it absorbs water?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
Cell wall
Cutaway drawing of a plant cell, showing the cell wall and internal organelles.
The plant cell wall is a rigid, protective structure composed primarily of cellulose that surrounds the cell membrane.12
When a plant cell absorbs water, the water enters the vacuole through osmosis, causing the vacuole to expand and push the cell membrane outward against the cell wall. This internal fluid pressure is known as turgor pressure. Because the cell wall is strong and rigid, it provides the necessary mechanical resistance to counteract this internal pressure, effectively preventing the cell from bursting. This process is essential for maintaining the plant's structural integrity, as the resulting turgor-induced stiffness allows stems and leaves to remain upright.134526