please someone explain ..the pressure flow model of phloem transport...!!!
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Explanation:
it proposes the water containing food molecules flows under pressure through the phloem. The pressure is created by the difference in water concentration of the solution in the phloem and the relatively pure water in the nearby xylem ducts
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Pressure flow or Mass flow Hypothesis
It is the most accepted mechanism for translocation of Sugars in higher plants. ... The glucose prepared in the leaves is converted into sugar. The sugar in the form of sucrose is moved into the companion cells and then into the living phloem sieve tube cells by active transport.
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