explain pressure flow of hypothesis of translocation of Sugars in plants
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The pressure flow hypothesis states that food is prepared in the plant leaves in the form of glucose. For translocation to the other parts the glucose is converted to sucrose a disaccharide. ... To reduce the osmotic pressure at the sink the sucrose is moved out of the phloem by active transport.
pressure flow hypothesis of translocation of sugars in plants. According to the pressure flow hypothesis, food is prepared in the plant leaves in the form of glucose. Before moving into the source cells present in the phloem, the prepared food is converted into sucrose.
The mechanism by which sugars are transported through the phloem, from sources to sinks, is called pressure flow. At the sources (usually the leaves), sugar molecules are moved into the sieve elements (phloem cells) through active transport.