The four main parts of a tree are roots, stems, branches and leaves. Roots are underground, and there are many roots at the bottom of a tree.

The trunk is divided into five layers. Most trunks are heartwood. When a tree grows up, its roots will firmly entangle the soil under its body to prevent soil erosion.

Trees are the floorboard of woody plants, including trees, shrubs and woody vines. Trees are mainly seed plants. Among ferns, only tree fern is a tree. There are about 8,000 kinds of trees in China. Divided into banyan trees; Poplar; Willow; Cypress, etc.

Extended data:

The main classification of trees:

According to the growth type of trees

1. The tree is very tall (generally 6 meters to tens of meters), and the trunk is obviously tall.

2. Shrub trees are short (usually less than 6 meters) and the trunk base is very short.

3. Woody plants (such as Parthenocissus tricuspidata) can grow upwards by winding or attaching to other things.

4. Creeping stems and branches grow creeping (such as spreading cypress trees).

Baidu encyclopedia-tree