There are no organelles. Cellular functions take place in the cytoplasm. Almost all have cell walls for rigidity and protection. These cells have organelles which compartmentalize operations. Keeps raw materials together.
Many operations are incompatible.
Some products need to be stockpiled and stored. Involved in modification of polypeptides into mature proteins and in lipid sythesis. Fluid filled compartment for rigidity and storgae. Involved in cell division in many types of cells. Special organelles for motility.