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单词 cycads
释义

cycads

听听怎么读
英 [si:'k?dz]
美 [si'k?dz]
是什么意思
  • n.

    苏铁(cycad的复数);

  • 英英释义

    cycad

    • n.any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves
    学习怎么用

    双语例句

    1. Genus of small evergreen tropical and subtropocal American cycads.
      一种小的常绿热带和亚热带美洲苏铁。
    2. Cycads and ginkgo have motile sperm, unlike gnetophytes and conifers, which produce pollen.
      苏铁和银杏具活动精子可区别于买麻藤和松柏类,它们不产生花粉。

    权威例句

    Cycads
    world list of cycads
    The Biology of the Cycads
    Cycads: their evolution, toxins, herbivores and insect pollinators.
    Cycads: evolutionary innovations and the role of plant-derived neurotoxins.
    A phylogeny of cycads (Cycadales) inferred from chloroplast matK gene, trnK intron, and nuclear rDNA ITS region
    Root-based N2-fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycads
    Root-based N 2 -fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycads
    DNA Barcoding in the Cycadales: Testing the Potential of Proposed Barcoding Markers for Species Identification of Cycads
    Testing co-evolutionary hypotheses over geological timescales: interactions between Mesozoic non-avian dinosaurs and cycads.
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