Tamilnadu BoardEnglish MediumSTD 8ScienceForces and Pressure.2 Marks
Question
How does surface tension help a plant?
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Answer
Water molecules rise up due to surface tension. Xylem tissues are very narrow vessels present in plants. Water molecules are absorbed by the roots and these vessels help the water to rise upward due to “capillarity action” which is caused by the surface tension of water.
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