Advertisements
Advertisements
Question
What do you mean by transpiration pull ?
Advertisements
Solution
Transpiration Pull: As the water is lost from the leaf surface by transpiration more water molecules are pulled up due to the tendency of water molecules to remain joined (cohesion), and thus- to produce a continuous column of water through the stem. This phenomenon is known as transpiration pull
APPEARS IN
RELATED QUESTIONS
Name the following:
The condition of a cell placed in a hypotonic solution.
Name the following:
Condition of cell in which the cell contents are shrunken.
Name the following:
The process by which raisins swell up when placed in a beaker of water.
Choose the correct answer:
Plasmolysis will occur when the cell is placed in a __________
Give Reasons for the following.
It is necessary to maintain a normal osmotic concentration of the blood.
The beaker is divided into two chambers A and B. The big circle represents solute and the small circles solvent.
(i) What can you say about the size of the holes in the membrane, if it is to behave semi- permeably between these two?
(ii) Will the solvent molecules pass through the membrane from left to right, from right to left, in either direction or in both directions?
(iii) In which direction will there be a net movement of solvent molecules?
Give Technical Term for the following.
A solution whose concentration is greater than that of the cell sap.
Name the following:
Condition of cell in which the cell content are shrunken.
Multiple Choice Question:
Plasma membrane controls:
Explain the Term: Exosmosis
