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Plants can stand erect.Plant cells have one layer over ceel membrane which is known as cell wall.cell wall gives rigidity, stiffness, mechanical power to the cell .so that the planning can stand erect as the cells have cell wall.
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Plants are able to stand upright thanks to the turgor pressure in the cells. The large central vacuole in the plant cells are able to take up water and makes the cell more rigid and the overall plant erect.
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