1. Photosynthesis: Plants are autotrophs, meaning they can produce their own food. They use chlorophyll, a green pigment, to capture sunlight and convert it into chemical energy through the process of photosynthesis.

2. Cell Walls: Plant cells have rigid cell walls made primarily of cellulose, which provides structural support and helps maintain their shape.

3. Multicellular: All plants are made up of multiple cells, organized into tissues and organs.

4. Growth in Specific Regions: Plants have specialized regions called meristems where cell division occurs, allowing them to grow throughout their lives.

Let me know if you'd like to know more about any of these characteristics!