VASCULAR PLANTS are those that have sap irrigation by ducts in their roots, stems or trunks and leaves. There are two types of ducts, the XILEMA and the PHLOEMA. Tracheophyta or Tracheobionta is a taxon encompassing vascular plants or tracheophytes. They are organisms formed by plant cells, which have a life cycle in which the gametophytic and sporophytic generations alternate (dominant phase)
