Q. Tension, one of the important factor in the movement of xylem sap in a tree is a result of
A) Cohesive nature of water
B) Capillary size of xylem tube
C) Transpiration at the leaf surface
D) All at the above
Explanation
Loss of water from the aerial parts of plant through continuous transpiration causes a suction pressure or tension in the water column of plant. This tension develops due to transpiration and is also called as transpirational pull
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.