Question

Root pressure theory was not accepted for translocation in tall plants because of

• A. Low hydrostatic pressure and high gravitational force in tall plants
• B. High hydrostatic pressure and high gravitational force in tall plants
• C. Low hydrostatic pressure and low gravitational force in tall plants
• D. None of the above

Answer 1

The correct option is A Low hydrostatic pressure and high gravitational force in tall plants

The tall plants are considered to have high gravitational force which resists the flow of water in the upward direction. The root pressure theory explains that the pressure or suction created by transpiration is enough to produce root pressure which results in the absorption of water. It was the assumption that there is low hydrostatic pressure in the soil which results in little absorption by the tall plants. These are the reasons which did not accepted the root pressure theory for the tall plants.

Thus, the correct answer is option A.