The exodermis is a layer of cells from the outermost layer of the cortex of many angiosperms. Like the endodermis, its cells are very compact and are surrounded by a Casparian strip, two features which are used to restrict flow of water to symplastic rather than apoplastic flow through passages through the cells' membranes called plasmodesmata.
例句与用法
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Exodermis an outermost layer of thickened or suberized cortical cells that sometimes replaces the epidermal layer in the older parts of roots if the epidermal cells have died 外皮层：薄的或木栓化的皮层细胞的最外层。如果根的较老部分表皮细胞死亡，它通常取而代之。
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