A) capillarity
B) pulsatory movement of living tissue
C) role of atmospheric pressure
D) transpiration pull and cohesion theory
Correct Answer: D
Solution :
Cohesion theory or theory of transpiration pull was proposed by Dixon and Jolly (1894). It is based on 3 basic assumptions : Cohessive force between water molecules. Adhesion force (continuty) between water and walls. Transpiration pull.
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