The vessels, which do not appear in ferns or conifers, are cylindrical, are generally less than one centimeter in diameter, and are useful when the cell contents die.
This object is made of vessel elements and tracheids, the latter of which has cell walls with a lot of lignin. The vessels, which do not appear in ferns or conifers, are cylindrical, are generally less than one centimeter in diameter, and are useful when the cell contents die. There are two types of this tissue, with the secondary type typically growing inward from the vascular cambium. Though it also provides structure to plants, its primary purpose is to transport water and nutrients throughout a plant. Name this tissue often contrasted with phloem.
This object is made of vessel elements and tracheids, the latter of which has cell walls with a lot of lignin.
Xylem