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10. What role does root pressure play in water movement in plants?
Answers (1)
Root pressure is a positive pressure that develops in the xylem sap of the root of plants. Root pressure is the manifestation of active water absorptions. Root pressure theory was given by Priestley in 1916 to establish the role of root pressure in the movement of water. The roles played by root pressure in the water movement of plants are as follows:
1. Root pressure can transport water up to small heights.
2. Root pressure helps in re-establishing the continuous chains of water molecules in the xylem.
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