Plants living in very dry regions are specially adapted to stop them from losing too much water. They have smaller leaves, which are often thin and spiny, or they may have no leaves at all as in the case of cacti. The chlorophyll in a cactus is concentrated in the plant’s fattened stems.
Desert plants also conserve water by having a thick waxy coat over their leaves and stems, and by storing water after the rain. Some desert plants have fat, swollen leaves or stems that are filled with water. Desert plants also have extremely long roots that burrow deep into the soil.
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