A popliteal cyst, also known as a Baker's cyst, is a fluid-filled swelling that causes a lump at the back of the knee.
the smallest category is species but from largest to smallest it will be: kingdom Phylum class order family genus and species and you can come up with another word for it to hâ¦elp you with it. so yeh there you go.
Organisms in biology are classified by this system: kingdom, phylum, class, order, genus, species. Kingdoms being the largest groups. Species is the smallest major group before they divide into sub groups. So Genus would be the next group larger if that is what you mean, but all the other groups would be larger as well.