Answer:
The pressure-flow theory is a model that explains how water and solutes, including glucose, are transported in plants. It states that the movement of water and solutes from the roots to the leaves is driven by a pressure gradient that exists between the roots and the leaves. The pressure gradient is created by the active transport of water from the roots to the xylem tissue, which creates a high pressure in the roots. This high pressure drives the flow of water and solutes from the roots to the leaves, where the pressure is lower. The glucose is transported along with the water in the xylem tissue, so it also moves from the roots to the leaves. This process continues until a balance is reached between the pressure in the roots and the pressure in the leaves, which results in a steady flow of water and solutes in the plant.
Step-by-step explanation:
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