According to the Pressure-Flow Hypothesis

question 4

Multiple Choice

According to the pressure-flow hypothesis:

• A) water moves from an area of positive water potential to an area of negative water potential.
• B) the evaporative pull of transpiration produces tension at the top of the plant.
• C) the flow of sugar is driven by a hydrostatic pressure gradient produced by water entering the phloem.
• D) pressure is created by the movement of water into the roots from the soil.
• E) the column of water pulled up through the plant is unbroken due to cohesive and adhesive properties.

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