Which factors contribute to water movement through xylem?A.Adhesion and pressure-flow hypothesisB.Transpiration and capillary actionC.Transpiration and pressure-flow hypothesisD.capillary action and diffusion
Question
Which factors contribute to water movement through xylem?A.Adhesion and pressure-flow hypothesisB.Transpiration and capillary actionC.Transpiration and pressure-flow hypothesisD.capillary action and diffusion
Solution
The factors that contribute to water movement through xylem are Transpiration and capillary action. Therefore, the correct answer is B. Transpiration and capillary action.
Here's why:
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Transpiration: This is the process where water is lost from the plant leaves to the atmosphere in the form of water vapor. This loss of water from the leaves creates a suction force which pulls up water from the roots through the xylem vessels to the leaves.
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Capillary action: This is the ability of a liquid to flow in narrow spaces without the assistance of, and in opposition to, external forces like gravity. The xylem vessels are narrow tubes, and water can rise up in these tubes due to capillary action.
The other options mentioned like adhesion, pressure-flow hypothesis, and diffusion are not directly involved in the movement of water through xylem.
Similar Questions
Which of the following describes how water moves through the xylem of a plant?A.In a downward direction through pressure-flow.B.In an upward direction through active transport.C.In a downward direction through capillary action.D.In an upward direction through the force of adhesion.
The transportation of water and minerals through xylem includes all the processes listed below, EXCEPT*1 pointroot pressure.transpiration pulls.transmembrane route.cohesion-tension mechanism.
Which of the following factors contributes to capillarity in xylem vessels?Repulsion between water and xylem cell wallsAdhesive force between water and xylem cell wallsAttraction between water and airTranspiration pull
1. What allows the movement of water under tension in the xylem?A. Adhesion of water molecules to dissolved mineral saltsB. Cohesion of water molecules due to hydrogen bondingC. Adhesion between water molecules due to uneven sharing of chargesD. Cohesion between water molecules and other polar substances
Water is transported in plants by a variety of means. However, transport over long distances isprimarily the result of:A. root pressure.B. transpiration.C. active transport of water from xylem vessels into leaf cells.D. higher water potential in leaf cells as compared to root cells.E. active transport of water into xylem vessels.
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