Worms are members of several invertebrate phyla, including Platyhelminthes (flatworms), Annelida (segmented worms), Nemertea (ribbon worms), Nematoda (roundworms, pinworms, etc.), Sipuncula (peanutworms), Echiura (spoonworms), Acanthocephala (spiny-headed worms), Pogonophora (beardworms), and Chaetognatha (arrowworms).
What are the 3 types worms?
Worms are classified into three major phyla, or groups. They are flatworms, roundworms, and segmented worms. Flatworms belong to the phylum Platyhelminthes (plat ee hel MIN theeze). Most flatworms are parasites that obtain their food from a host animal.
How many types of worms are there?
There are at least 20,000 species, or kinds, of worm. They are not all related. In fact, they belong to several different animal groups. Some well-known groups of worms are flatworms, roundworms, and segmented worms.
What is the most common type of worms?
Pinworms are also called “threadworms.” They're the most common type of intestinal worm infection in the U.S., and one of the most common in the world. They're thin and white, and about one-quarter to one-half inch long -- about as long as a staple. Tapeworms are flat worms that look a bit like ribbons.
What are 10 worms?
The enemy within: 10 human parasitesHookworm. (Necator americanus) ... Scabies mite. (Sarcoptes scabiei var. ... Roundworm. (Ascaris lumbricoides) ... Flatworm blood fluke. (Schistosoma mansoni, S. ... Tapeworm. (Taenia solium) ... Pinworm. (Enterobius vermicularis) ... Wuchereria bancrofti. ... Toxoplasma gondii.The enemy within: 10 human parasites | New Scientist