Flagella are whip-like structures that are used for locomotion in some bacteria, archaea, and certain types of eukaryotic cells like sperm cells and some algae.

Plant cells, being immobile, do not need to move around and therefore do not have flagella. They rely on other mechanisms for movement, such as:

* Growth: Plant cells grow and expand in specific directions, allowing them to move towards light or other resources.

* Currents: Plants can use the movement of water currents to transport seeds or pollen.

* Wind: Wind can disperse seeds and pollen from plants.

It's important to remember that not all eukaryotic cells have flagella, and plant cells are one example of this.