Some succulents (e.g., the cactus) store water only in the stem and have no leaves or very small leaves;others (e.g., agaves) store water mainly in the leaves.

• 一些肉质植物（如仙人掌）只在茎部贮水，无叶或叶子很小，而别的一些（如龙舌兰）则主要靠叶子贮水。