Ascent of Sap
Ascent of Sap: Overview
This Topic covers sub-topics such as Ascent of Sap, Vital Force Theory, Root Pressure Theory and, Physical Force Theory
Important Questions on Ascent of Sap
Which of the following helps in ascent of sap?

In mass flow, various substances move independently according to their


The transpiration pull creates a negative pressure in the xylem vessels called _____ which is transmitted down to the roots.

_____ is a non-living content of the vacuole.

Cell sap is found in _____ of a plant cell.


Loss of water through a cut stem is called _____.


A column of water within xylem vessels of tall trees does not break under its weight because of


Choose the correct match given in Column I with their role given in Column II.
Column I | Column II |
Root hair | Wilting |
Stomata | Guttation |
Hydathode | Transpiration |
Xylem vessels | Ascent of sap |

Cohesion theory of ascent of sap is based on

Which of the following is more during the night



Xylem is associated with translocation of :-

The physical properties of water like cohesion, adhesion and surface tension give water which of the following ability that help in ascent of xylem sap?

If we place a twig, bearing white flowers in coloured water, it turns color, on examining the T.S. of the twig, what can we demonstrate?

Cohesion, adhesion & surface tension physical properties of water, provide which of the following properties (Characteristics) are in the water column?
