Aloes have adapted to habitats with low
water availability. Aloes adapt to this by using their tissue to store
large volumes of water. Aloe vera has thick and fleshy leaves, which
are enlarged to accommodate the aqueous tissue. The leaf cuticle is
thick and covered with a layer of wax.
Aloes are also able to
utilize crassulacean acid metabolism (CAM), which is an adaptation to
the photosynthetic pathway in hot climates that involves the formation
of malic acid.
in excess of that needed for energy are transported by the phloem
to the cells in the leaf pulp. The Aloe vera gel in the leaf pulp
serves as the water and energy storage component of the plant.