Plants take water out of the ground and bring
it to their leaves and branches. The water is used
by the leaves during photosynthesis, and it
also keeps the plants from wilting by increasing
the amount of fluid in each cell. This water,
which is taken up by the roots, is called the
"xylem". Once the plant synthesizes glucose
for the plant, its sent back down to the roots
through the "phloem".
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