Question
Hard
Solving time: 4 mins
Assertion : Cohesion force is also called as tensile strength.
Reason : Attraction of water molecule to polar surface or hydrophilic wall of the xylem tube causes adhesion force.
Text solutionVerified
The force which is responsible to join water molecules to each other in water column is cohesion force. On the account of cohesion force, water column can bear a pull or tension up to 100 atm. Therefore, it is also known as tensile strength while the force between the wall of tracheary elements and water molecule is called as adhesion force which produces surface tension and which account for high capillarity through tracheids and vessels.
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Question Text | Assertion : Cohesion force is also called as tensile strength. Reason : Attraction of water molecule to polar surface or hydrophilic wall of the xylem tube causes adhesion force. |
Topic | Transport in Plants |
Subject | Biology |
Class | Class 11 |
Answer Type | Text solution:1 |
Upvotes | 118 |