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词汇 exodermis
释义
exodermis
noun [ S ] biology specialized uk/ˌek.səˈdɜː.mɪs/ us/ˌek.səˈdɝː.mɪs/
(植物根部的)外皮层
a layer of cells in a plant's root underneath the epidermis (= outer layer)
The exodermis is thought to protect against water loss from the root to the soil. 人们认为,外皮可以防止水分从根部流失到土壤中。
    更多例句
  • The cells of the exodermis are very compact, restricting the flow of water.
  • The exodermis is a single-cell layer at the outer surface of the root directly below the root epidermis.
  • The exodermis of a one-year-old root is often flaking and falling off.
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