Plants can survive hot and dry conditions by storing water in their large cells. These cells, called parenchyma cells, act like water reservoirs, holding onto water for the plant to use during periods of drought. Additionally, plants can also reduce their water loss by having fewer leaves, having leaves with a waxy coating, and having numerous stomata, which are tiny openings on the surface of leaves that can close to prevent water loss. Some plants, like evergreen trees, are adapted to survive in hot and dry conditions by having thick, waxy leaves that are able to retain water and stay green all year round.