The ______________ of materials through the phloem occurs because of water pressure.

Name: The ______________ of materials through the phloem occurs because of water pressure.
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Mass flow is the movement of materials in response to pressure gradients. In the case of the phloem, the movement of sugars and other nutrients occurs through mass flow driven by the pressure created by the water moving from source (where sugars are produced) to sink (where they are utilized).

The ______________ of Materials Through the Phloem Occurs Because of Water