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单词 exodermis
释义

Definition of exodermis in English:

exodermis

nounˌɛksə(ʊ)ˈdəːmɪsˌeksōˈdərməs
mass nounBotany
  • A specialized layer in a root beneath the epidermis or velamen.

    〔植〕外皮层

    Example sentencesExamples
    • There were no visible differences in the development of endodermis, exodermis and aerenchyma between the two varieties and growth conditions.
    • In the endodermis and exodermis of roots, the apoplastic flow component can be modified by the existence of apoplastic barriers.
    • Thus, water channels in the epidermis and/or exodermis of the older regions were especially significant for water flow.
    • After switching to UV illumination, a clear image of the fluorescent exodermis allowed observation and measurement of its component cells.
    • The root endodermis and, to a lesser extent, exodermis have been identified as possible membrane control points for radial water flux in roots.

Origin

Early 20th century: from exo- 'outside', on the pattern of endodermis, epidermis.

Definition of exodermis in US English:

exodermis

nounˌeksōˈdərməs
Botany
  • A specialized layer in a root beneath the epidermis or velamen.

    〔植〕外皮层

    Example sentencesExamples
    • Thus, water channels in the epidermis and/or exodermis of the older regions were especially significant for water flow.
    • There were no visible differences in the development of endodermis, exodermis and aerenchyma between the two varieties and growth conditions.
    • In the endodermis and exodermis of roots, the apoplastic flow component can be modified by the existence of apoplastic barriers.
    • The root endodermis and, to a lesser extent, exodermis have been identified as possible membrane control points for radial water flux in roots.
    • After switching to UV illumination, a clear image of the fluorescent exodermis allowed observation and measurement of its component cells.

Origin

Early 20th century: from exo- ‘outside’, on the pattern of endodermis, epidermis.

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更新时间:2025/6/18 16:44:11