A cactus can be used for many things. Firstly it can be used for decoration, be it inside, on a window ledge, or outside in a garden. A cactus has a natural exceptional ability to store a lot of water and this also makes it useful for doing just that.
Garden tools are used to move cactus plants, because of their ferociously intimidating modified leaves. Gloves are used to handle cactus plants carefully. Moisture meters are used to gauge the amount of soil moisture. Protective eyewear such as sunglasses, and protective clothing are used to check the cactus over. Systemic fungicides are used now instead of copper sulfate to break the cycle of cactus decline from fungal attacks.
Cactus, like other plants, uses photosynthesis to get energy.
Cactus
Cactus plants use their stems for storage. So that's where starches are stored. In fact, stems are where a cactus plant stores everything. Other, non cactus plants may use their roots for storage. But cactus roots are much too fibrous and shallow.
A cactus competes with other plants for water.
The cactus wren
Plant, although both terms "plant" and "flower" are arbitrary labels and are used interchangeably.
The most popular plant living in the desert is cactus. There are different kinds of cactus, for example barrel cactus. There are other plants like grasses, shrubs, trees, and wildflowers.
Temperature is a limiting factor for cactus plants, in terms of extremes of heat and cold. For example, desert cactus plants are used to a hot, dry climate. But temperatures may be so high that the available water evaporates.It particularly is the other extreme, of chilling temperatures, that may be fatal for a cactus. Cold may leave a cactus with a range of problems from stem tip damage to actual stem collapse. Cactus plants that are exposed to excess cold or dampness are prone to rot, which softens and blackens tissue.
Yes, cactus plants are used for making buildings. For example, the giant saguaro cactus [Carnegiea gigantea] has a lot of body parts to offer from its mature height of 40 feet/12 meters. Indeed, the cactus is the source for the renowned roof of the historic Catholic Mission San Xavier del Bac of the Santa Cruz valley near Tucson, Arizona.
The cactus is a plant that usually thrives in a dry environment.
One cactus that has medicinal value is the peyote cactus [Lophophora williamsii]. It has been used to treat asthma and rheumatism. Another is the night flowering queen of the night [Selenicereus grandiflorus]. Its blooms are used in medicinal preparations that improve blood circulation.