Question

rate of absorption of water by plant increases with increase in rate of transpiration why?

Answer 1

Dear Student,

The upward movement of water or absorption of water by plants is closely related with the transpiration. Let me explain you how.

Due to evaporation of water from the cells present on the surface of the leaves (transpiration) a vacuum space is created. To fill that vacuum water droplets from the other cells rush inside. This rush of water towards the vacuum creates a mechanical force that enables to pull up water absorbed by the roots through the stems. These antis gravitational force that results in upward movement of water through the xylem is known as transpiration pull. In tall trees transpiration pull can draw water up to 50 meter height.

Regards