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单词 phloem
释义

phloem

/ˈfləʊɛm /
noun [mass noun] Botany
The vascular tissue in plants which conducts sugars and other metabolic products downwards from the leaves.The conducting tissues within the vascular bundles are the xylem and phloem....
  • For the stem, the outermost green tissue, including both phloem and cambium were estimated.
  • Root tissue samples are hereafter referred to as periderm, phloem and xylem.

Origin

Late 19th century: from Greek phloos 'bark' + the passive suffix -ēma.

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更新时间:2024/12/23 23:42:10