Typically composed of non-living conductive cells and living parenchyma cells
Conductive cells have thick secondary cell walls, often deposited unevenly in a coil-like pattern so that they may stretch
Dead at functional maturity
Two types of conductive cells- tracheids and vessels
Tracheids - long, slender cells connected to each other by pits. Found in all vascular plants
Vessels - shorter, larger diameter cells with completely perforated cell wall ends. Found only in Angiosperms
Xylem Parenchyma arranged in rays
Xylem parenchyma are also distributed throughout the tracheids and vessel elements
Phloem