The direction of phloem sap in the phloem is | vedclass

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(A) The movement of phloem sap is driven by the pressure-flow hypothesis. Phloem transports food (sucrose) from the source (leaves) to the sink (roots

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Bi-directional

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(A) The movement of phloem sap is driven by the pressure-flow hypothesis. Phloem transports food (sucrose) from the source (leaves) to the sink (roots,fruits,or developing buds). During the growing season,the direction is usually from leaves to roots,but during early spring,stored sugars in the roots move upwards to the developing buds. Therefore,the movement of phloem sap is bi-directional.

The direction of phloem sap in the phloem is ........

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