A rigid structural layer surrounding plant cells, composed primarily of cellulose, that provides protection, structural support, and shape to the cell. It distinguishes plant cells from animal cells and allows plants to maintain turgor pressure.
From Latin 'cella' meaning 'small room' and Old English 'weall' meaning 'rampart' or 'barrier.' The term was first used by Robert Hooke in 1665 when he observed the box-like structures in cork tissue, though he was actually seeing the walls of dead cells.
The cell wall is like a plant cell's personal suit of armor, but it's alive and growing! Unlike a rigid shell, it can expand as the cell grows and even communicate with neighboring walls - imagine if your house walls could talk to your neighbor's walls and coordinate home improvements.
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