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B
Boehm
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C
Scholander
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D
Curtis
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Solution
The correct option is B Sachs Imbibitional theory was given by Unger and supported by Sachs in 1879. The theory supported the fact that water moves up from the root hair through the xylem by the imbibition of water. Imbibed (absorbed) water moves in tubes in the walls of the plants without the cooperation of living cells and not within the cell cavities.