celldiagram.worldBiology · Cell Boundary
Cell Wall Diagram
A plant cell wall is a strong, porous layer outside the cell membrane. This diagram separates its major layers and communication channels.
Interactive vector diagram — click a part, hide labels, or download a 300 DPI PNG / editable SVG.
Diagram labels and functions
| Structure / stage | Function |
|---|---|
| Middle lamella | Pectin-rich layer joining adjacent cells. |
| Primary wall | Flexible cellulose-rich outer wall. |
| Secondary wall | Extra thick support in some cells. |
| Cell membrane | Selective boundary just inside the wall. |
| Plasmodesma | Channel connecting neighboring cells. |
Layers on a cell wall diagram
The middle lamella glues cells together. The primary wall is flexible during growth, while some mature cells add a thicker secondary wall.
Cell wall versus cell membrane
The wall provides support and is freely permeable. The membrane controls which substances cross into the living cell.
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Frequently Asked Questions
What is the cell wall made of?
Plant cell walls are built mainly from cellulose, hemicellulose and pectin.
What is the function of plasmodesmata?
They form channels for communication and transport between neighboring plant cells.
Do animal cells have cell walls?
No. Animal cells have only a cell membrane around the cytoplasm.
Search terms covered by this page
cell wall diagram · diagram cell wall