Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Leaves are the food factories of the tree. Powered by sunlight, the ...

Trunk A tree's trunk is made of wood and is covered in bark. The trunk of a tree is like the stem of a small plant, only a lot stronger. It too carries water around the tree. Roots The roots of a ...

All trees have a leaf structure that can be classified as either ... It is always attached to a twig by its stem or the petiole. The margins, or edges, of the simple leaf can be smooth, jagged ...

This growth is essential for structural strength, particularly in trees. Stem cells in the plant's cambium layer control this width growth, producing wood to support the plant's structure.

Their growth patterns and structures vary widely across species and environments. In general, a tree is a tall and perennial woody plant with a clearly defined main stem. In contrast, a bush is ...