Biology for IGCSE & O level - Transport In Plants (Section 6 - No. 11)
What is the primary driving force behind the movement of water in the xylem from the roots to the leaves?
Root pressure
Osmosis
Transpiration pull
Active transport
Explanation
Transpiration pull, or the tension created by water evaporation from the leaves, is the primary driving force. It's the cohesion and adhesion properties of water along with the transpiration pull that allows this transport.
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