Chloroplasts are only found in the parts of the plant that are capable of photosynthesis. The majority of chloroplasts are found in the leaves of the plant because these structures have the greatest surface area for absorption. The outer part of a plant stem may also contain chloroplasts.Plants have Eukaryota cells with large central vacuoles, cell walls containing cellulose, and plastids such as chloroplasts and chloroplasts. Different types of plant cells include parenchymal, collenchymal, and trencherman cells. The three types differ in structure and function.