The root is the nutrient organ of the tree, which is a very important part. Generally, it is under the ground. It can absorb the water and nutrients in the soil to supply the growth of the tree, and it can also store nutrients. When there is no water in the soil, it can still rely on the stored nutrients to grow.
Above the root is the trunk part, and the outermost layer is the bark, which is the most surface part of the trunk. It can protect the trunk from external invasion, prevent diseases from invading the tree body, and play a good protective role. Under the bark is the phloem, which can transport sugar. The third layer is the key part, the cambium, which is relatively thin, but it is the center of growth. The next layer is sapwood, which can transport water from roots to trees. The color of this layer is lighter. The fifth layer is heartwood, most of which are heartwood.
The branch is the branch above the trunk, which is the branch extending upward. It will grow coarser with the growth, and can determine the general shape of the tree.
Leaves are the leaves growing on the branches. They absorb sunlight through the leaves, and then synthesize nutrients for the growth of trees.
