Question

define transpiration

Answer 1

We know that $\textbf{Transpiration}$ is actually lost of 90% of absorbed water in the form of water vapour fron different aerial parts of plants.

It helps the plants in the following ways :

1. It provides cooling effect.

This cooling effect is due to released water vapour in atmosphere.

2. It helps Xylem to conduct water upwards.

The loss of water by plants through leaves creates a suction which pulls water from xylem cells of roots, due to pressure difference.

Answer 2

hey mate here's ur answer....
roots take so much water for their growth from the soil...when the water the roots have taken is absorbed there is excess water left and by the process of transpiration it is evaporated..basically transpiration means the evaporation of the excess water from the surface of the leaf........
if my answer was helpful plz mark me as branliest.....