以下为句子列表：
英文: A clearly defined endodermis is seen in all roots and in the stems of the non seed-bearing vascular plants and some dicotyledons.
中文: 所有不产生种子的维管植物和一些双子叶植物的茎中都可以清楚的显示出这一结构。
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英文: Endodermis The innermost part of the cortex, consisting of a single layer of cells that controls the passage of water and solutes between the cortex and the stele.
中文: 内皮层：是皮层的最内层，仅有一层细胞，可以控制皮层和中柱之间水和溶质的通过。
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英文: We have observed the following characteristics of anatomical structure and development: (1) The primary roots belong to archetype and the lateral roots occur in the position toward the xylem of the vascular cylinder; (2) The root endodermis consists of th
中文: 结果表明：气生不定根具有以下结构特征和发育特点：(1)根为二原型，侧根正对着木质部发生；(2)幼根内皮层细胞具凯氏带加厚，维管柱内紧挨中柱鞘内侧具有2~4层大型薄壁细胞；(2)根中无髓和树脂道；(4)次生结构发生于根毛区，维管形成层由初生木质部和初生韧皮部之间的薄壁细胞转化形成；(5)中柱鞘和栓内层细胞富含单宁类物质；(6)次生韧皮部有石细胞，次生木质部射线发达。
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