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What allows water molecules to stick together so they can be pulled upward by the force of transpiration
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What allows water molecules to stick together so they can be pulled upward by the force of transpiration

User AxelPAL
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The cohesive properties of water (hydrogen bonding between adjacent water molecules) cause the water column to 'pull up' through the plant as water molecules evaporate on the surface of the leaf. This cycle was called the Sap Ascent Cohesion Theory in plants
User Yqlim
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