Here are some other cells and tissues found in tree bark:
* Phloem： This living tissue carries sugars produced in the leaves down to the rest of the tree.
* Cambium: This is a thin layer of actively dividing cells that produces new phloem and xylem (the water-carrying tissue).
* Parenchyma cells: These living cells are involved in storage and other metabolic functions.
* Fibers: These are elongated cells that provide structural support to the bark.
* Sclereids: These are hard, thick-walled cells that also provide structural support.
The specific composition of tree bark varies depending on the species of tree.
