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词汇 monocotyledon
释义

Definition of monocotyledon in English:

monocotyledon

noun ˌmɒnə(ʊ)kɒtɪˈliːd(ə)nˌmɑnəˌkɑdlˈidn
Botany
  • A flowering plant with an embryo that bears a single cotyledon (seed leaf). Monocotyledons constitute the smaller of the two great divisions of flowering plants, and typically have elongated stalkless leaves with parallel veins (e.g. grasses, lilies, palms).

    〔植〕单子叶植物。比较 DICOTYLEDON

    Class Monocotyledoneae (or -donae, -dones; sometimes Liliopsida), subdivision Angiospermae

    Compare with dicotyledon
    Example sentencesExamples
    • In monocotyledons, the expanding region of leaves, where cell division and tissue expansion take place, is located near the leaf insertion point.
    • Lipid transfer proteins are small, basic proteins that have been purified from both monocotyledons and dicotyledons.
    • Besides this constitutive system, iron reductases have been described in dicotyledons and non-grass monocotyledons that reduce iron prior to uptake.
    • Results presented in this study are in good agreement with those reported for other monocotyledons such as maize and rice.
    • Sandersonia aurantiaca is a liliaceous monocotyledon with a bell-shaped corolla formed from fused petals and sepals (tepals).

Derivatives

  • monocotyledonous

  • adjective ˌmɒnə(ʊ)kɒtɪˈliːd(ə)nəsˌmɑnəˌkɑdəˈlid(ə)nəs
    Botany
    • However GLR-like genes have been identified in other dicotyledonous and monocotyledonous species as well as in gymnosperms, indicating that these genes are of general importance in plant physiology.
      Example sentencesExamples
      • Moreover, there is the CAM-performing Yoshua tree of the genus Yucca with a special monocotyledonous type of secondary thickening.
      • Little is known about the involvement of receptor genes in the ethylene perception of monocotyledonous plants such as rice.
      • This protein has 11% methionine in its coding sequence and is stable in seed- and non-seed tissues of both monocotyledonous and dicotyledonous plants.
      • Petal abscission was rare in the monocotyledonous flowers tested, and common in the eudicotyledons.

Rhymes

cedarn, cotyledon, dicotyledon, Eden, Sweden

Definition of monocotyledon in US English:

monocotyledon

nounˌmänəˌkädlˈēdnˌmɑnəˌkɑdlˈidn
Botany
  • A flowering plant with an embryo that bears a single cotyledon (seed leaf). Monocotyledons constitute the smaller of the two great divisions of flowering plants, and typically have elongated stalkless leaves with parallel veins (e.g. grasses, lilies, palms).

    〔植〕单子叶植物。比较 DICOTYLEDON

    Class Monocotyledoneae (or -donae, -dones; sometimes Liliopsida), subdivision Angiospermae

    Compare with dicotyledon
    Example sentencesExamples
    • Lipid transfer proteins are small, basic proteins that have been purified from both monocotyledons and dicotyledons.
    • Results presented in this study are in good agreement with those reported for other monocotyledons such as maize and rice.
    • Sandersonia aurantiaca is a liliaceous monocotyledon with a bell-shaped corolla formed from fused petals and sepals (tepals).
    • Besides this constitutive system, iron reductases have been described in dicotyledons and non-grass monocotyledons that reduce iron prior to uptake.
    • In monocotyledons, the expanding region of leaves, where cell division and tissue expansion take place, is located near the leaf insertion point.
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