Six different classes, dominated by the Class Nematoda, represent Aschelminthes as a phylum. The nematodes (Nema, thread) or roundworms are ubiquitous small worms that dwarf in numbers all other groups of multicellular animals except insects and mites.n hookworms, the mouth is armed with teeth or cutting plates. Some nematodes are provided with lips, papillae or a leaf crown around the external opening of the mouth. The pharynx (oesophagus) is a strong muscular tube with walls that can contract and expand, creating a pump-like suction mechanism.
Wiktionary(0.00 / 0 votes)Rate this definition: squad(Noun) A group of people organized for some common purpose, usually of about ten members. squad(Noun) A unit of tactical military personnel, or of police officers, usually of about ten members.
Best Answer: Pretty much, a squad leader is the guy/gal in charge of the squad and they are responsible for you and whoever else is in that squad. Think of them as your immediate supervisor. The supervisor trains the new guy, inspects their work, makes sure they do what they're supposed to and not get in trouble.