Ascent of Sap

IMPORTANT

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

HARD
IMPORTANT

Which of the following helps in ascent of sap?

EASY
IMPORTANT

In mass flow, various substances move independently according to their

MEDIUM
IMPORTANT

Xylem sap is made up of 

EASY
IMPORTANT

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

EASY
IMPORTANT

_____ is a non-living content of the vacuole.

EASY
IMPORTANT

Cell sap is found in _____ of a plant cell.

EASY
IMPORTANT

Select the odd one out:

EASY
IMPORTANT

Loss of water through a cut stem is called _____.

EASY
IMPORTANT

What is responsible for guttation?

EASY
IMPORTANT

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

EASY
IMPORTANT

Root pressure develops due to:

MEDIUM
IMPORTANT

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

MEDIUM
IMPORTANT

Cohesion theory of ascent of sap is based on

EASY
IMPORTANT

Which of the following is more during the night ?

EASY
IMPORTANT

Ascent of sap in plants explains

EASY
IMPORTANT

Root pressure is a :-

EASY
IMPORTANT

Xylem is associated with translocation of :-

EASY
IMPORTANT

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?

EASY
IMPORTANT

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?

MEDIUM
IMPORTANT

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