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La World Checklist of Vascular Plants ( WCVP, en français littéralement la « Liste mondiale des plantes vasculaires ») est une base de données en ligne de taxonomie végétale. Il s'agit d'un consensus mondial sur toutes les espèces de plantes vasculaires connues, comprenant les plantes à fleurs, les conifères, les fougères et les ...
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (/ ˌ æ n dʒ i ə ˈ s p ər m iː /), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of broad-leaved trees , shrubs and vines , and most aquatic plants .
Non-vascular plants is a general term for those plants without a vascular system ( xylem and phloem ). Although non-vascular plants do not have these tissues, some of them have other tissues for internal transport of water . Nonvascular plants have no roots, stems, or leaves. These structures always have some vascular tissue.
Xylem. Xylem (blue) transports water and minerals from the roots upwards. Xylem is one of the two types of transport tissue in vascular plants, the other being phloem. The basic function of the xylem is to transport water from roots to stems and leaves, but it also transports nutrients.
Vascular plants include the clubmosses, horsetails, ferns, gymnosperms (including conifers ), and angiosperms ( flowering plants ). Scientific names for the group include Tracheophyta, [8] [4] : 251 Tracheobionta [9] and Equisetopsida sensu lato. Some early land plants (the rhyniophytes) had less developed vascular tissue; the term ...
Tracheophyta o Tracheobionta es un taxón que abarca a las plantas vasculares o traqueofitas. Son organismos formados por células vegetales, que poseen un ciclo de vida en el que se alternan las generaciones gametofítica y esporofítica, siendo esta última la fase dominante (sobre quién actúa más presión de selección natural ); cuya ...
Vascular plants transport sucrose in a special tissue called the phloem. The phloem and xylem are parallel to each other, but the transport of materials is usually in opposite directions. Within the leaf these vascular systems branch (ramify) to form veins which supply as much of the leaf as possible, ensuring that cells carrying out photosynthesis are close to the transportation system.
