Yahoo Italia Ricerca nel Web

Risultati di ricerca

  1. Vascular plants (from Latin vasculum 'duct'), also called tracheophytes (/ t r ə ˈ k iː. ə ˌ f aɪ t s /) or collectively tracheophyta (/ t r ə ˈ k iː. ə f aɪ t ə /; from Ancient Greek τραχεῖα ἀρτηρία (trakheîa artēría) 'windpipe', and φυτά (phutá) 'plants'), form a large group of land plants (c ...

  2. en.wikipedia.org › wiki › PteridophytePteridophyte - Wikipedia

    A pteridophyte is a vascular plant (with xylem and phloem) that reproduces by means of spores. Because pteridophytes produce neither flowers nor seeds, they are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden.

  3. The vascular plants, or tracheophytes, are plants that have specialized tissues for conducting water, minerals, and photosynthetic products through the plant. They include the ferns, clubmosses, horsetails, flowering plants, conifers and other gymnosperms. They are often called the higher plants.

  4. it.wikipedia.org › wiki › TracheophytaTracheophyta - Wikipedia

    Le tracheobionta o tracheofite ( Tracheophyta ), sono un superphylum (super divisione) appartenente al regno delle Plantae caratterizzate dalla presenza di veri tessuti ed organi. Esse, per la presenza di vasi, sono anche dette piante vascolari .

  5. 维管植物 ( 学名 : Tracheophyta )或作 维管束植物 [1] ,是指具有 维管组织 的植物,這些組織中可將液體作快速的流動,在體內运输水分和养分,它包括 蕨类植物 和 种子植物 [2] 。 种子植物又分为 裸子植物 和 被子植物 。 全球已发现的维管植物约在30~40万种之间 [3] 。 辨别方法. 维管植物有两个重要的辨别方法: 维管植物具有维管组织,因而得以支撑生长到一个较大的体积。 非维管植物则一直保持着较小的体积。 在维管植物,其主要生成階段是 孢子體 。 在 木質部 (主要)和 韌皮部 (次要),水分皆會被不停運送:木質部將水和無機溶質從根部運送往 葉 片(單向往上),而韌皮部則會把植物中的有機溶質運送往全株植物(雙向)。

  6. 13 ago 2021 · The World Checklist of Vascular Plants (WCVP) is a comprehensive list of scientifically described plant species, compiled over four decades, from peer-reviewed literature, authoritative...