Plants have evolved various mechanisms to store water in arid environments to survive in drought conditions. One common adaptation is the presence of specialized tissues or structures that can store water, such as succulent leaves, stems, or roots. These tissues have the ability to absorb and retain water during periods of rainfall or high humidity, which the plant can then use during dry periods. Additionally, some plants have developed deep root systems that can access underground water sources, allowing them to survive in arid environments where surface water is scarce. Overall, these adaptations help plants maintain their water balance and survive in arid conditions.