Final answer:
A major feature that plant cells have which animal cells do not is a cell wall, used for structural support and protection. Plant cells also possess chloroplasts for photosynthesis and a large central vacuole for storage, neither of which are found in animal cells.
Step-by-step explanation:
One major feature that plant cells have that animal cells do not is a cell wall. The cell wall is a rigid layer external to the cell membrane, primarily made of cellulose and proteins among other polysaccharides. It provides structural support, protection, and maintains cell shape.
Water and nutrients can move through pores in the cell wall thanks to its semi-permeable nature, and it also prevents the plant cell from bursting when water enters due to osmotic pressure. In contrast to cell walls, both plant and animal cells possess cell membranes.
Plant cells also contain chloroplasts and a large central vacuole, which are not found in animal cells. Chloroplasts are the sites of photosynthesis, where plants convert light energy into chemical energy. The large central vacuole is used for storage of materials and helps maintain turgor pressure within the cell.