Salts and water absorbed by roots create water pressure {root pressure} that pushes water from roots through stem to leaves.
Root cells actively transport minerals. Root cells absorb water by osmosis, to dilute minerals pumped into root cells. Water absorption causes pressure {turgor pressure} on cell walls. Turgor pressure provides cell support and shapes non-woody plants.
Too-low cell water makes low turgidity, and cells can burst {plasmolysis}.
4-Botany-Plant-Vascular-Circulation
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Date Modified: 2022.0225