Q15 / 200 · NEET 2022 (Phase 2) · Botany

The ascent of xylem sap in plants is mainly accomplished by the :

A
size of the stomatal aperture
B
distribution of stomata on the upper and lower epidermis
Correct answer
C
cohesion and adhesion between water molecules
D
root pressure

Solution

Ascent of sap in xylem is mainly due to transpiration pull which is supported by physical properties of water such as cohesion and adhesion between water molecules. Cohesion is also called Tensile strength of water molecule.

Hence, the correct answer is option: 'C'.

Relevant Questions

Given below are two statements: Statement I : Parenchyma is living but collenchyma is dead tissue. Statement II : Gymnosperms lack xylem ves2024Permanent Tissues
Which of the following simple tissues are commonly found in the fruit walls of nuts and pulp of pear?2024 (Re-NEET)Permanent Tissues
Given below are two statements: Statement I: Endarch and exarch are the terms often used for describing the position of secondary xylem in t2023 (All India)Permanent Tissues
The type of tissue commonly found in the fruit wall of nuts is :2022 (Phase 2)Permanent Tissues
The phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as :2022 (Phase 2)Permanent Tissues
Select the correct pair.2021Permanent Tissues