Question:
How tension is responsi
ble for water movement in xylm?
Answer:
It is explained by cohesion- tension theory. This is a theory of intermolecular attraction that explains the process of water flow upwards through the xylem of plants.
When sunlight strikes the plant , it results evaporation. This causes water to move up against the flow of gravity from stem to leaf, lowering the water potential in the stem.
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