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Question
The continuous excretion of watery substance from stump of a well watered pot plant after cutting off the shoot slightly above the base is due to
The continuous excretion of watery substance from stump of a well watered pot plant after cutting off the shoot slightly above the base is due to
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Solution
The correct option is A Root pressure
Root pressure is osmotic pressure within the cells of a root system. Root pressure is generated by active uptake of minerals by roots, which lowers water potential of root cells and water flows inside the cells along its concentration gradient. Thus, on the cutting of shoot, excretion of watery substance from cut side occurs.
Root pressure is osmotic pressure within the cells of a root system. Root pressure is generated by active uptake of minerals by roots, which lowers water potential of root cells and water flows inside the cells along its concentration gradient. Thus, on the cutting of shoot, excretion of watery substance from cut side occurs.
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