1. Chloroplasts: These are the sites of photosynthesis, where light energy is converted into chemical energy in the form of glucose.
2. Cell Wall: This rigid outer layer provides structural support and protection for the plant cell.
3. Vacuoles: These large, fluid-filled sacs store water, nutrients, and waste products, and help maintain the cell's turgor pressure.
While some animal cells may have small vacuoles, they are not as prominent or essential as those in plant cells.