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Question
In tall plants, because of which factor, continuous water column extends upward?
In tall plants, because of which factor, continuous water column extends upward?
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Solution
The correct option is B Suction pull
Transpiration pull or cohesion-tension theory was proposed by Dixon and Jolly (1894) Water molecules form a continuous column by cohesion. The cell walls of xylem vessels have a strong affinity for water molecules, i.e. adhesion. Loss of water from aerial parts through transpiration cause a suction pressure in the water column of plant which is called transpiration pull.
Transpiration pull or cohesion-tension theory was proposed by Dixon and Jolly (1894) Water molecules form a continuous column by cohesion. The cell walls of xylem vessels have a strong affinity for water molecules, i.e. adhesion. Loss of water from aerial parts through transpiration cause a suction pressure in the water column of plant which is called transpiration pull.
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