Explain the cohesion-tension theory of water transport in plants. Describe how transpiration, cohesion between water molecules, adhesion, and tension contribute to the upward movement of water through xylem.

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According to the cohesion-tension theory, water moves upward through xylem mainly because of transpiration pull. Cohesion keeps water molecules together, while adhesion helps them remain attached to xylem walls, allowing a continuous water column to move upward.

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