Thanks for the great question!
All life on earth depends on water to survive.
For plants, water is very important because it is
needed for photosynthesis, or the
transformation of sunlight into sugar used for
food by the plant.
Some plants, however, are better than others at
using less water to grow tall. Cacti, for
instance, are adapted to use very little
water due to the dry environments they grow
in. To grow tall with less water, cacti have thick
stems that store water and different type of
metabolism for using less water to
So all plants need some water to keep
growing, but depending on the environment they
can evolve ways to use water more efficiently.
Thanks again for the question,
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