context: Urochordata is a subfile of chordates. Urochordata comes from Latin (Uro: tail, chorda: the trunk supporting the body in). The most prominent are the sea squirts tunicates (class Ascidiacea). Various kinds grow in the colony. Most of the body is occupied by very large gills with various gill slits that function as filters for food.
question: What is meant by Urochordata?
answers.text: subfile of chordates