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 and angiosperms together constitute the spermatophytes or seed plants The spermatophytes are subdivided into five divisions, the angiosperms and four divisions of gymnosperms: the Cycadophyta, Ginkgophyta, Gnetophyta, and Pinophyta (also known as Coniferophyta)
  • 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
    Gymnosperms are one of the oldest groups of seed-producing plants, predating the flowering plants known as angiosperms They are integral to many ecosystems, providing habitat, food, and resources for a variety of organisms
  • 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
  • Seed Plants: Gymnosperms – Introductory Biology
    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
  • 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 - plantfacts. osu. edu
    Others were the ancestors of the plants we now know collectively as "gymnosperms" In these plants the seeds are not enclosed in an ovary, as in the flowering plants; they grow on the surface of a modified leaf in a strobilus or cone "Gymnosperm" means naked seed
  • Gymnosperms - GeeksforGeeks
    Gymnosperms are seed-bearing plants whose name comes from the words gymnos, meaning naked and sperma, meaning seed They do not produce flowers or fruits, and their seeds are not enclosed within a fruit, which distinguishes them from flowering plants
  • Beyond pine Cones: An Introduction to Gymnosperms
    So what are gymnosperms and what makes them so intriguing? There are four groups of plants that make up the gymnosperms: the well-known conifers, plus the lesser known cycads, ginkgo, and the order Gnetales
  • Gymnosperms - UC Davis
    Gymnosperms are tracheophytes whose life cycle have novel features The new traits include the ovule, the seed, pollination, and wood, all of which are adaptations for survival on land





中文字典-英文字典  2005-2009