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Created with Fabric.js 1.4.5 Rolled Leaves Xerophytes ADAPTATIONS OF XEROPHYTES CAM Physiology Thick Waxy Cuticle Low Growth Stomata in Pits Reduced Leaves Plants that can tolerate dry conditions (i.e. deserts, high altitudes) due to various specialized adaptations Agave Cactus Pine Prickly Pear Esparto Grass Cactus Reducing the surface area of the leaf will reduce the area for water loss. This results to a decrease in transpiration. Plants with CAM physiology require less carbon dioxide. Thismeans that stomata are able to stay closed longer, limiting water loss. Rolled leaves limits exposure of stomata to air, as well as water loss. This results to a decreased transpiration. A thickened and waxy cuticle limit water loss from the leaf's surface and thus, reduces transpiration. Low growth means that plants are only located near the ground. This prevents them from being exposed to wind and thus, reduces transpiration. Stomata and pits associated with hairs concentrates water vapor near stomata. This limit water loss and thus, reduces transpiration. Cactus NATURAL SELECTION A succulent, long-lived photosynthetic system allows cacti to survive periods of extreme drought while maintaining well-hydrated tissues Due to environmental changes, Cacti have transformed their leaves into spines, having made their stems into barrels containing a reserve of water; photosynthesis is performed in the surface of the stem instead of in the leaves
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