Centrioles

Centrioles are short cylinders with a 9+0 microtubule triplet that helps in organizing spindle fibers and direct organization of microtubles within cilia and flagella. Centrioles are found only in animal cells.

Centrioles are like policemen in an everyday city because the job of centrioles in Cellville is to organize microtubules, or the streets of Cellville, which is what policemen do in normal cities.