Who proposed cohesion theory of water movement in plants?

Options

(a) J C Bose
(b) Priestly
(c) Dixon and Jolly
(d) TV Engelmann

Correct Answer:

Dixon and Jolly

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 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 the stem to tip of leaves.
3. Strong transpiration pulls exerted by all the transpiring leaves on the stem.