Trees convert sunlight into energy through their leaves. We will focus on leaves that convert solar energy into substances that are beneficial to living things. Leaves are important organs that efficiently collect solar energy and convert it into the energy that living things need. In order to detect the direction of light and efficiently absorb light energy, leaves adjust to the movement of the sun and to detect changes in the environment and follow their posture so that they can absorb the maximum amount of light energy.
The structure of the leaf is thin to avoid the effects of wind and spreads out flat to absorb light effectively. The epidermis and shelf-like tissue form a strong epidermal membrane, and chlorophyll is stored in the spongy tissue to convert energy. The spongy tissue contains veins (vascular bundles transport water and nutrients while ensuring the mechanical strength of the plant body) that correspond to the blood vessels of living things. The epidermis on the back side has stomata, which are tissues that take in carbon dioxide from the atmosphere and release oxygen. Chlorophyll converts carbon dioxide into sucrose using solar energy and transports it to the main body of the tree through the veins for use in the plant’s survival. They also use solar energy to convert the water they take in into oxygen, which they release into the atmosphere through their stomata. When the environmental temperature rises, they release water through their stomata to lower the temperature, thus playing a role in maintaining a constant temperature and humidity in the forest environment. The work of trees helps to maintain the forest environment. In this way, not only do trees help to lower the temperature of the global environment, but they also produce the sugar and oxygen that living organisms need to survive. Trees play an important role in maintaining the lives of living organisms.