All plants are eukaryotes that contain many cells. In addition, plants are autotrophs, which produce their own food.
Plants carry out the process called photosynthesis to make their food. During photosynthesis, a plant uses carbon dioxide gas and water to make food and oxygen. Sunlight provides the energy that powers the entire process.
For plants to survive on land, they must have ways to:
- obtain water and other materials from their surroundings,
- retain water
- transport materials throughout the plant
- support their bodies
- and reproduce successfully.