The physical characteristics of the organisms matched to their purpose;
Cilia- thin, hairlike structures used for locomotion
Flagella- long, tail-like structure used for locomotion
Pseudopods- feetlike projections to capture a potential prey
Pilli- used to hold onto rocks
Cilia are thin hair-like protuberances found on the outer part of eukaryotic cells. Cilia are mainly used for locomotion, either of substances on the cell surface or of the cell itself. Protozoans that have cilia are called ciliates and they use the cilia for both locomotion and feeding.
Flagella are long tail like structure used by cells and microorganisms for locomotion. Flagella are found in eukaryotes, bacteria and archae. Cilia and flagella are similar in structure and function but flagella are usually singular and longer than cilia.