The most widely accepted explanation for the | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The most widely accepted theory for the ascent of sap is the $Transpiration$ $Cohesion-Tension$ theory,proposed by $Dixon$ and $Joly$ in $1894$. A

Vedclass · Accepted Answer

Transpiration cohesion theory of Dixon

Vedclass · Answer

(D) The most widely accepted theory for the ascent of sap is the $Transpiration$ $Cohesion-Tension$ theory,proposed by $Dixon$ and $Joly$ in $1894$. According to this theory,the ascent of sap is driven by the transpiration pull generated at the leaf surface due to the evaporation of water. This pull is transmitted down the water column in the $Xylem$ due to the cohesive and adhesive properties of water molecules,which prevent the column from breaking under tension.

The most widely accepted explanation for the ascent of sap in trees is:

Similar Questions

Given below are two statements.
Statement $I$ - Presence of capillary water is essential.
Statement $II$ - High concentration of solutes in soil water reduces the rate of absorption of water.
In the light of the above statements,select the correct option given below:

By which mechanism is water absorbed under low transpiring conditions?

What role is played by root pressure in the transport of water in plants?

Ascent of sap is

What is the force developed in the cortex of the root that pushes water from the soil into the xylem of the root?

Vedclass Test Series

Exam Paper Generator

Online Exam Module