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单词 zygomorphic
释义

Definition of zygomorphic in English:

zygomorphic

adjective ˌzɪɡə(ʊ)ˈmɔːfɪkˌzʌɪɡə(ʊ)ˈmɔːfɪkˌzaɪɡəˈmɔrfɪk
Botany
  • (of a flower) having only one plane of symmetry, as in a pea or snapdragon; bilaterally symmetrical.

    〔植〕两侧对称的。比较ACTINOMORPHIC

    Compare with actinomorphic
    Example sentencesExamples
    • Floral examination revealed that flowers are zygomorphic, bisexual, and have a protruding style and terminal pollen-presenter surrounding the stigma.
    • The gynoecium is on the median plane of these zygomorphic flowers and not oblique as described in taxonomic literature.
    • It is a family of predominantly annual and perennial herbs with a semi-succulent habitus, which can be easily distinguished from other balsaminoids by its zygomorphic flowers with a spurred petaloid sepal.
    • For example, the weakly zygomorphic flower is scarlet, shows diurnal anthesis and has a backwardly curved labellum.
    • Alternatively, the gynoecium of a zygomorphic flower can be on the median plane of the flower, but the entire flower can be oblique to the axillary plane.

Derivatives

  • zygomorphy

  • noun
    Botany
    • The point of this example is that as long as typical asterid flower development is maintained, a limited number of forms of zygomorphy are possible, and other forms are effectively off limits.
      Example sentencesExamples
      • Growth of the corolla and androecium show a dorso-ventral asymmetry that also results in zygomorphy.
      • Based upon any classification, we must conclude that floral zygomorphy has evolved more than once, and if true, then we would predict different ontogenies leading to zygomorphy in different clades.
      • In addition, as suggested by Leins and Erbar, the zygomorphy of the flowers found in the Lobelias makes them more effective for pollination than actinomorphic flowers.
      • Zygomorphic flowers were mostly found among hummingbird- and medium-large bee-pollinated species and, in fact, zygomorphy is largely known as a visual attractant for some groups of pollinators such as bees and hummingbirds.

Definition of zygomorphic in US English:

zygomorphic

adjectiveˌzīɡəˈmôrfikˌzaɪɡəˈmɔrfɪk
Botany
  • (of a flower) having only one plane of symmetry, as in a pea or snapdragon; bilaterally symmetrical.

    〔植〕两侧对称的。比较ACTINOMORPHIC

    Compare with actinomorphic
    Example sentencesExamples
    • Alternatively, the gynoecium of a zygomorphic flower can be on the median plane of the flower, but the entire flower can be oblique to the axillary plane.
    • The gynoecium is on the median plane of these zygomorphic flowers and not oblique as described in taxonomic literature.
    • Floral examination revealed that flowers are zygomorphic, bisexual, and have a protruding style and terminal pollen-presenter surrounding the stigma.
    • For example, the weakly zygomorphic flower is scarlet, shows diurnal anthesis and has a backwardly curved labellum.
    • It is a family of predominantly annual and perennial herbs with a semi-succulent habitus, which can be easily distinguished from other balsaminoids by its zygomorphic flowers with a spurred petaloid sepal.
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更新时间:2024/12/27 19:55:50