Water loss from the of a plant creates a pull on water within the causing water to be drawn upward in the plant.

cuticle, phloem

leaves, xylem

leaves, phloem

bark, parenchyma

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.