make their own food through a process called photosynthesis
When plants make their own food, it is called photosynthesis
You have already learned that the sun’s energy enters the leaves through the chlorophyll in the leaves. A plant’s leaves also have hundreds of thousands of tiny holes in them called stoma. The stoma are so small you have to have a microscope to see them, but they are big enough to breathe in the carbon dioxide a plant needs to make its food.
Plants take in carbon dioxide through their leaves at the same time they are soaking up energy from the sun and taking a drink of water.
Wow! I bet you never realized how busy or important a plant’s leaves are, did you?
Once the leaves of a plant have collected enough carbon dioxide, water and sun-energy, they are ready to make food for the entire plant.
but green plants make their own food.
Most leaves are flat and contain ; their main function is to convert energy from sunlight into chemical energy (food) through photosynthesis.
- the part of the stem of a plant from which a leaf, branch, or aerial root grows; each plant has many nodes.