Cohesion transpiration pull theory of ascent of sap was proposed by

Munch

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Stephen Hales

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Dixon and Joly

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Bose

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Solution

The correct option is C Dixon and Joly
Cohesion transpiration pull theory was proposed by Dixon and Jolly. They proved that cohesion and adhesion support continuity of water columns and provide strength like a steel wire, transpiration pulls water columns towards leaves which causes ascent of sap.
So, the correct answer is 'Dixon and Jolly'.

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