what are xerophytes
A xerophyte or xerophytic organism (xero meaning dry, phyte meaningplant) is a plant which is able to survive in an ecosystem with little available water ormoisture, usually in environments where potential evapotranspiration exceeds precipitation for all or part of the growing season. Plants like the cactus and other succulents are typically found in deserts where low rainfall amounts are the norm, but xerophytes such as the bromeliads can also be found in moist habitats such as tropical forests,exploitingniches wherewater suppliesare limited or too intermittent for mesophytic plants. Plants that live under arctic conditions may also have a need for xerophytic adaptations, as water is unavailable for uptake when the ground is frozen. Their leaves are covered with silvery hairs (creates wind break light reflective surface).Adaptations of xerophytes include reduced permeability of the epidermal layer, stomata and cuticle to maintain optimal amounts of water in the tissues by reducing transpiration, adaptations of the root system to acquire water from deep underground sources or directly from humid atmospheres (as in epiphytic orchids), and succulence, orstorageof water in swollen stems, leaves or root tissues. The typical morphological consequences of these adaptations are collectively called xeromorphisms.
1)They have deep root system to draw deep underground water because desert is a place with scanty rainfall.
2)Their leaves have modified into spines to reduce water loss through stomata during transpiration.