Describe the mechanism of acent of sap in plants.
Asked by | 12th Jul, 2008, 10:58: AM
In plants, the vessels and tracheids of xylem of roots, stems and leaves are interconnected to form a continuous water conducting system, reaching all parts of the plant. At the rootgs, cells in contact with the soil actively take up the ions, creating a difference in the ion concentration between root and soil. Water moves into the rootfrom the soil. Hence there is a steady movement of water into root xylem creating a water column that is steadily pushed upwards. In addition to this, transpiration pull is another major factor in driving the movement of water in the xylem.
Answered by | 12th Jul, 2008, 11:57: AM
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