1、 Root

The root is the nutrient organ of the tree, which is a very important part. Generally, it is underground, which is supplied to the growth of the tree by absorbing the water and nutrients in the soil, and can also store nutrients. When there is no water in the soil, it can still rely on the stored nutrient supply for growth

2、 Trunk

Above the root is the trunk part, and the outermost layer is bark, which is the most surface part of the trunk. It can protect the trunk from external invasion and prevent diseases from invading the tree body. Under the bark is the phloem, which can transport sugar. The third layer is a key part. It is the cambium. This layer is relatively thin, but it is the center of growth. The next layer is sapwood, which can transport water from the root to the trees. This layer is lighter in color. The fifth layer is heartwood. Most of the trunk is heartwood

3、 Branches

Branches are branches above the trunk and branches that extend upward. They will gradually thicken with growth and can determine the general shape of trees

4、 Leaves

Leaves are the leaves growing on branches. They absorb sunlight through leaves, and then synthesize nutrients to supply them to the growth of trees