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.
Is the most specific of the levels of classification, contains only one type of organism. genus Describes two or more species that share unique characteristics and are considered to be closely related and are placed together.