Explanation

Cohesion tension theory was proposed by Henry Dixon and Jolly in 1894. It is greatly supported and elaborated by Dixon (1914, 1924). It is also called as transpiration pull theory and is based on the following assumptions 1. Cohesive and adhesive properties of water molecules 2. Continuous water column from root hairs through stem to tip of leaves 3. Strong transpiration pull exerted by all the transpiring leaves on the stem