Water and the minerals dissolved in it are transported in plants by xylem tissue, the xylem vessels and traches of the roots, stems and leaves are interconnected to form a continuous water conducting channel which reaches all the parts of the plant. The mechanism of transport of water in plants is as follows : The leaves of plants have tiny pores called stomata. The water brought in by xylem to the leaves is constantly being lost by evaporation through stomata. The loss of water in the form of water vapour form the leaves of a plants is called transpiration. The continuous evaporation of water (or transpiration) form the cells of leaves creates a kind of suction which pulls up water from the roots through the xylem (just as a cold drink moves up the straw when we suck at the upper end of the straw). Thus, transpiration helps in the upward movement of water and dissolved minerals from the leaves.
