英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:


请选择你想看的字典辞典:
单词字典翻译
Gymnosperms查看 Gymnosperms 在百度字典中的解释百度英翻中〔查看〕
Gymnosperms查看 Gymnosperms 在Google字典中的解释Google英翻中〔查看〕
Gymnosperms查看 Gymnosperms 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Gymnosperm - Wikipedia
    The gymnosperms ( ˈdʒɪmnəˌspɜːrmz, - noʊ - ⓘ nə-spurmz, -⁠noh-; from Ancient Greek γυμνός, gymnós 'naked' and σπέρμα, spérma 'seed', thus 'naked seed') are a group of woody, perennial seed-producing plants, typically lacking the protective outer covering which surrounds the seeds in flowering plants, that include conifers, cycads, gingkos, and
  • Gymnosperm | Definition, Description, Plants, Examples, Phylogeny . . .
    Gymnosperm, any vascular plant that reproduces by means of an exposed seed, or ovule—unlike angiosperms, or flowering plants, whose seeds are enclosed by mature ovaries, or fruits The seeds of many gymnosperms (literally ‘naked seeds’) are borne in cones and are not visible until maturity
  • Gymnosperms - Definition, Examples, Life Cycle
    Learn about gymnosperms in biology Get the definition, example, life cycle, classification, and differences from angiosperms
  • Gymnosperms: Definition, Examples, and Reproduction
    Gymnosperms are flowerless plants with seeds that are not covered by an ovary There are four main types of gymnosperms: conifers, cycads, ginkgoes, and gnetophytes Gymnosperms reproduce through a cycle involving male and female cones and rely on wind or insects
  • Gymnosperms- Characteristics, Morphology, Classification, Uses
    Definition: Gymnosperms are the plants that are most ancient vascular, flowerless, seed-producing, and can reproduce through an exposed seed or ovule They produce seeds without fruits which means the ovules and the seeds that develop from these ovules are not enclosed in the fruit wall
  • Gymnosperms - The Gymnosperm Database - conifers. org
    Gymnosperms are woody plants, either shrubs, trees, or (rarely) vines They differ from flowering plants in that the seeds are not enclosed in an ovary but are exposed within any of a variety of structures, the most familiar being cones
  • Gymnosperms - Characteristics, Life Cycle, Examples, Economic . . .
    Gymnosperms are vascular, seed‑producing plants whose ovules (seeds) develop exposed (“naked”) on cone scales rather than enclosed within an ovary Gymnosperms show adaptation to several environmental circumstances by occupying a broad spectrum of habitats throughout several climatic zones
  • Gymnosperm - an overview | ScienceDirect Topics
    Gymnosperms are defined as a group of plants that reproduce by means of ovules or seeds that are not enclosed within a carpel, with their ovules typically borne in cones or singly on modified branches
  • Seed Plants: Gymnosperms – Introductory Biology: Evolutionary and . . .
    Gymnosperms (“naked seed”) are a diverse group of seed plants and are paraphyletic Paraphyletic groups do not include descendants of a single common ancestor Gymnosperm characteristics include naked seeds, separate female and male gametes, pollination by wind, and tracheids, which transport water and solutes in the vascular system
  • 26. 2: Gymnosperms - Biology LibreTexts
    Gymnosperms were the dominant phylum in Mesozoic era They are adapted to live where fresh water is scarce during part of the year, or in the nitrogen-poor soil of a bog





中文字典-英文字典  2005-2009