vessel cell
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function in pteridophytes
- In lower vascular plant: Cells of the vascular system
Vessel cells, which have evolved in several lines of fern evolution and are the principal water-conducting cell type of flowering plants, are modified tracheids in which the end walls have lost their primary membranes, thus providing direct, unimpeded connections for water transport between the cells.…
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structure in angiosperms
- In angiosperm: Structural basis of transport
Vessel elements are barrellike cells with widths of up to 0.5 millimetre (0.02 inch) in some plants. Vessel elements are arranged end to end; their end walls are partly or wholly dissolved, and rows of such cells thus form long capillaries (tubes) up to several…
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xylem
- In xylem
Vessel members are the principal water-conducting cells in angiosperms (though most species also have tracheids) and are characterized by areas that lack both primary and secondary cell walls, known as perforations. Water flows relatively unimpeded from vessel to vessel through these perforations, though fractures and…
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