Phylum Aschelminthes

Roundworms are the popular name for Aschelminthes. They are triploblastic, bilaterally symmetrical, and pseudocoelomates creatures. Aschelminthes can be parasitic or free-living. The free-living creatures, which feed on bacteria, are abundant in soils and sediments. Others are plant parasites that can cause disease in economically significant crops. The remaining parasites can be found in both animals and humans. Hookworms, pinworms (Enterobius), Guinea worms (Dracunculus), and intestinal roundworms are examples of parasitic worms. A well-developed muscular pharynx completes the alimentary canal. Through the excretory hole, an excretory tube transfers body wastes from the body cavity. In most of the Aschelminthes, the respiratory and circulatory systems are absent. They utilize the process of diffusion for the circulation of oxygen. Aschelminthes are dioecious, which means they are separate. Females are frequently taller than males.Internal fertilization occurs, and development can be either direct (the young resemble the adult) or indirect. The Giant Intestinal Roundworm (Ascaris lumbricoides) is an endoparasite that lives in the human gut. They're quite prevalent in kids. Ascariasis is a disease caused by these worms. Many adult roundworms dwell inside the intestine, obstructing the digestive tract.Examples: Ascaris (Roundworm), Wuchereria (Filaria worm), Ancylostoma (Hookworm).

Phylum Aschelminthes