Tree Biology

Contents: - periderm - phellem - cork cambium - phelloderm - cortex - phloem- phloem rays - phloem - sieve tube element - companion cells - cambial zone (cambium) - bark - xylem - growth ring - vessels - tyloses - parenchyma - axial parenchyma - multiserrate ray parenchyma - uniserrate ray parenchyma - fibers - symplast - apoplast - growth ring/ray compartment - decay development

Click on any of the above terms to view its location in the tree cross section

Compartment (a,b,c,d) is bound by rays and growth ring boundaries. Compartments C1, C2, and C3 are sub-compartments within the larger compartment. A tree is built of many compartments. These compartments help confine and retard the spread of decay. Parenchyma cells typically comprise compartment boundaries.