43+ Anatomy Of Tree Trunk. These hormones are passed down from the inner bark, and contain food from leaves that stimulate new cell growth. Each year, it grows new bark and wood as a response to hormones called auxins.
Tree growth begins with photosynthesis to produce new wood when the growing season begins.
Anatomy of the human body. There is a printable worksheet available for download here so you can take the quiz with pen and paper. A tree bole is a portion of the stem or trunk of a tree of such size from which lumber can be cut. Branches and twigs grow out of the tree trunk and serve as support structures for leaves, flowers and fruit.