Question

How does transpiration help the roots absorb water & minerals from the soil?

Answer 1

Transpiration is the biological process by which water is lost in the form of water vapour from the aerial parts of the plants.

• During the day, it is the main driving force of water movement upwards in a plant.
• The loss of water by evaporation decreases the concentration of water within the mesophyll cells. Water enters mesophyll cells from adjacent xylem vessels by osmosis because of this. A suction force is produced when water evaporates from the leaves. This force helps pull more water through the stem, which allows more water from the soil to be absorbed by the roots.
• The higher the transpiration rate, the higher the soil absorption rate of water and solutes. Transpiration also allows the body of the plant to regulate its temperature.