AP BIOLOGY

Detailed explanation-1: -(taxonomy) A phylum comprised of roundworms characterized mainly by their smooth, cylindrical, thread-like unsegmented body. Supplement. Phylum Nematoda is a phylum of invertebrate animals. They are comprised of roundworms (or nematodes).

Detailed explanation-2: -threadworm, (Strongyloides stercoralis), worm of the phylum Nematoda that is parasitic in the human intestine but is able to live freely and breed in the soil. It is especially common in the moist tropics. Larvae are passed out of the host’s body in the feces.

Detailed explanation-3: -: any of a phylum (Nematoda or Nemata) of elongated cylindrical worms parasitic in animals or plants or free-living in soil or water. called also roundworm.

Detailed explanation-4: -The word nematode comes from the Modern Latin compound of nemat-“thread” (from Greek nema, genitive nematos “thread, ” from stem of nein “to spin"; see needle) +-odes “like, of the nature of” (see-oid).

Detailed explanation-5: -They are unsegmented vermiform animals. The epidermis has dorsal and ventral nerve cords. The Nematodes present in the soil feed on the bacteria, fungi, and other nematodes, and play an important role in nutrient recycling. They also attack the insects and control the pests.