The imbibition theory for the ascent of sap was suggested by

Sir J. C. Bose

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Strassburger

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Sachs

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Dixon and Jolly

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Solution

The correct option is C Sachs
Imbibitions theory was proposed (1868) and supported by Sachs (1878). According to this theory the ascent of sap occurs due to imbibitonal activity of the cell walls of the xylem elements.
This theory is discarded as it has been experimentally found that water rises up through the lumen of the xylem and not through the walls.

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Which one of the following theories for ascent of sap was proposed by the eminent Indian scientist J. C. Bose?

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