Water moves up in very tall plants as well. Which force causes the water to reach such height?
Water moves up in very tall plants as well. Which force causes the water to reach such height?
The correct option is C Transpiration pull
Four types of forces are responsible for the movement of water in plants. Upward movement of water against gravity (also called as ascent of sap) in plants depends mainly on cohesion and adhesion of water molecules. Cohesive forces are the intermolecular attractive forces between water molecules and adhesive forces are the intermolecular attractive forces between water and other molecules, like the matrix. These forces are sufficient for plants like grasses and shrubs.Transpiration pull is the suction pressure developed in the plant parts due to transpiration and this is much larger force which makes the water reach at the top even for very tall plants.
Transpiration pull
Four types of forces are responsible for the movement of water in plants. Upward movement of water against gravity (also called as ascent of sap) in plants depends mainly on cohesion and adhesion of water molecules. Cohesive forces are the intermolecular attractive forces between water molecules and adhesive forces are the intermolecular attractive forces between water and other molecules, like the matrix. These forces are sufficient for plants like grasses and shrubs.Transpiration pull is the suction pressure developed in the plant parts due to transpiration and this is much larger force which makes the water reach at the top even for very tall plants.
