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include drought shielding and drought tolerance. Higher plants resist water stress mainly through drought shielding (drought avoid), which manifests it as some plants (corn, rice, etc.) curl their leaves in arid conditions to reduce water loss. Some plants are pore subsidence, and the presence of waxy protective substances, leaves small or degraded to reduce the role of evapotrence. Some are widely distributed and deep root system, transmission
organum
developed, can enhance the absorption and transport of water, is conducive to maintaining the water balance of plants, to avoid water deficit. Many low-quality plants, such as moss and lichen, can withstand drought by drought tolerance, and their protosites have the ability to withstand dehydration without permanent damage. Most higher plants (except seeds and pollen) are weakly drought-tolerant.
