Home > Tree biology > Sieve tube elements
Tree biology
Contents: - periderm - phellem - cork cambium - phelloderm - cortex - phloem- phloem rays - 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 - wounding response - decay development
Select any of the above terms to view its location in the tree cross section. Text at bottom.
Sieve
tube elements move sugars from leaves toward roots. They are located just
outside the cambial zone. They contain protoplasm. Moving sugars from
one location to another in plants requires expenditure of energy.
