what allows phloem to move materials according to the plant's needs?
Asked by | 20th Mar, 2008, 01:08: PM
Materials such as the products of metabolic processes, are transferred into phloem tissue using energy from ATP. This increases the osmotic pressure of the tissuecausing water to move into it. This pressure moves the material in the phloem to tissues which have less pressure. This allows the phloem to move material according to teh plant's needs.
Answered by | 23rd Mar, 2008, 08:27: PM
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