WAEC BIOLOGY 2003 : When a plant shoot is placed in a dye solution, under which of the following physical conditions will the dye move up the stem?

When a plant shoot is placed in a dye solution, under which of the following physical conditions will the dye move up the stem?
A. Low temperature and low humidity
B. Low temperature and high humidity
C. High temperature and low humidity
D. High temperature and high humidity

 

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