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Biology, 30.08.2019 03:30 ant5784tgi

What is the driving force for the movement of materials in the phloem of plants?
a. gravity
b. a difference in pressure potential between the source and the sink
c. root pressure
d. transpiration of water through the stomates

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What is the driving force for the movement of materials in the phloem of plants?
a. gravity

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