Tree Structure Explained
The growth of a tree trunk reveals a fascinating hierarchy of structures, with the pith becoming less significant as the trunk matures. The majority of the trunk's mass is composed of secondary xylem, which is produced by the vascular cambium. Bark, consisting of periderm and secondary phloem, plays a crucial role in protecting the living tissues beneath it. Understanding these layers helps appreciate the complexity of tree anatomy.In this clip
From this podcast

The Science of Everything Podcast
Episode 97: Plant Structure and Function
Related Questions
What is special about how the vascular cambium makes new cells that is different from the already present xylem and phloem cells?
What is special about how the vascular cambium makes new cells that is different from the already present xylem and phloem cells in the episode Dendrology (TREES) with J. Casey Clapp and the clip Tree Anatomy Insights?