Final answer:
Flagella are long, whiplike structures that help cells move. Cilia are short, hair-like structures that also help cells move.
Step-by-step explanation:
Flagella are long, hair-like structures that extend from the plasma membrane and are used to move an entire cell. They are whip-like in appearance and are responsible for the movement of organisms such as sperm and Euglena.
Cilia, on the other hand, are short, hair-like structures that can be found along the entire surface of the plasma membrane. They are used to move entire cells or substances along the outer surface of the cell.