Question

list four factors that help in the movement of water upwards through xylem
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Answer 1

Answer:

the water move upward due to suction pressure..

Explanation:

suction pressure created by root pressure,cohesive and adhesive forces,transpiration of water continuesly and demand of water for preparing food

Answer 2

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The factors responsible for the movement of water in xylem are :

1. Transpiration pull : The Transpiration being carried out in the upper regions of the plant causes a continuous loss of water which causes a negative pressure to develop which drives the water upwards. Water has high tensile strength hence the continuous flow of water is not broken.

2. Root pressure : it is the positive pressure developed in the roots due to absorption of water and minerals from the soil which forces the water upwards to a certain range as well as prevents the formation of air bubbles.

3. Capillary action : It is the ability of water to rise up in thing tubes or columns. Water has the property of cohesion that binds the water molecules together as well as adhesion which helps the water molecules to stay attracted to the xylem walls.

4. Imbibition : It is the phenomenon in which colloidal particles attract a large amount of water.