Why are plant cells and animal cells shaped differently?
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Plant cells are not necessarily square, but they due tend to have distinct edges and be somewhat rectangular. This structure is caused by the cell wall which is very rigid and therefore forces the cell to have a defined shape. However, animal cells do not have a cell wall but only the plasma membrane.
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Plant cells and animal cells are shaped differently because of the following reasons -
- A cell wall and a cell membrane are present in a plant cell. But in an animal cell, only a cell membrane is present and the cell wall is absent. This is why the shape of animal and plant cells is different.
- Animal cells generally have different roles in the body. So the shape of animal shells depends on the role of the shell. But in the case of a plant shell, the shape is often like a square or a rectangular to reduce the interstitial space and to make the plant stronger.
- In the case of an animal cell, according to the Singer & Nicolson Fluid Mosaic model, the cell membrane of an animal cell has a layer of phospholipid which allows the cell's shape to be rounded. But in the case of a plant cell, there is no material as such phospholipid. So the shape is often like a square, or rectangular.
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