Largely, of cellulose! Cellulose is so tough, it is indigestible to most organisms, which is why vegetables and fruits are recommended to keep one "regular".
Presence of cell wall in plant cells make them rigid; animal cells are not rigid because these are without cell wall.
i think the answer shpuld be round to circle
plant cells
The rigid outter covering of plant cells is called the cell wall
Plant cells have a strong rigid cell wall on the outside of the cell membrane. This stops the cell bursting when it absorbs water by osmosis. The increase in pressure makes the cell rigid. This is useful as plants do not have a skeleton. Instead the leaves and shoots can be supported by the pressure of water in their cells. If plant cells lose too much water by osmosis they become less rigid and eventually the cell membrane shrinks away from the cell wall.
The cell wall makes plant cells rigid.
Collenchymatous cells have rigid cell wall
Presence of cell wall in plant cells make them rigid; animal cells are not rigid because these are without cell wall.
Because
i think the answer shpuld be round to circle
plant cells
A rigid cellulose membrane.
The rigid outter covering of plant cells is called the cell wall
yes, they do
Plant cells have a strong rigid cell wall on the outside of the cell membrane. This stops the cell bursting when it absorbs water by osmosis. The increase in pressure makes the cell rigid. This is useful as plants do not have a skeleton. Instead the leaves and shoots can be supported by the pressure of water in their cells. If plant cells lose too much water by osmosis they become less rigid and eventually the cell membrane shrinks away from the cell wall.
Plant cells have chloroplasts and cell walls, which animal cells don't have.
A Cell Wall