Question

How does transpiration account for the transport of water during the time?

Answer 1

Transpiration is the process of movement of water through a plant and its evaporation from the aerial parts of the plant like leaves, flowers and stems. The roots take only a small amount of water for growth and metabolism while the remaining 97 - 99.5% of the water is lost by transpiration and guttation.

There are pores called stomata on the surface of the leaves. They are bordered by guard cells and stomatal accessory cells which open and close the pore. Transpiration takes place through the stomatal apertures.

Transpiration cools the plants, changes osmotic pressure of the cells, enables mass flow of mineral nutrients and water from the roots to the shoots.