What characteristics do worms from the various worm phyla have in common?

They all have long, narrow bodies without legs. All worms also have tissues, organs, and organ systems. Worms have bilateral symmetry. Unlike sponges or cnidarians, worms have distinct head and tail ends.

What makes flatworms different from the other 2 phyla of worms?

The different phyla of worms display a great range in size, complexity, and body structure. Flatworms (phylum Platyhelminthes) are simple animals that are slightly more complex than a cnidarian. Roundworms (phylum Nematoda) have a slightly more complex body plan. Worms are invertebrate animals with bilateral symmetry.

How are worms different from other animals?

Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (not always). Free-living worm species do not live on land, but instead, live in marine or freshwater environments, or underground by burrowing.

How do flatworms move?

Small flatworms (Platyhelminthes) and some of the smaller molluscan species move along the bottom by ciliary activity. On their ventral (bottom) surface, a dense coat of cilia extends from head to tail. The direction of the ciliary beat is tailward, causing the animal to glide slowly forward.

What kingdom and phylum do earthworms belong to what characteristics distinguish this phylum from other worms?

Earthworm
Kingdom:	Animalia
Phylum:	Annelida
Class:	Clitellata
Order:	Opisthopora

What makes worms unique?

A worm has no arms, legs or eyes. There are approximately 2,700 different kinds of earthworms. Worms live where there is food, moisture, oxygen and a favorable temperature. In one acre of land, there can be more than a million earthworms.

What phylum do flatworms belong to?

phylum Platyhelminthes
flatworm, also called platyhelminth, any of the phylum Platyhelminthes, a group of soft-bodied, usually much flattened invertebrates.

How are segmented worms DIfferent from roundworms?

One of the most prominent differences between roundworms and segmented worms is their circulatory systems. Segmented worms have a complete circulatory system, while round worms do not. Roundworms have no hearts or blood vessels. Roundworms use diffusion to breathe and pass nutrients throughout their bodies.

How do worms move?

An earthworm moves using circular and longitudinal muscles, as well as bristles called setae. The earthworm can push the setae out of its body to grab the soil around it. To move forward, the worm uses its setae to anchor the front of its body and contracts the longitudinal muscles to shorten its body.

What phylum do worms belong to?

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).

How do flatworms move and why?

Movement in some flatworms is controlled by longitudinal, circular, and oblique layers of muscle. Others move along slime trails by the beating of epidermal cilia. The development of directional movement is correlated with cephalization.

How do segmented worms move?

Segmented worms move through their burrow by using their well-developed muscles. The worm’s stiff bristles stick out from each of the worm segments. In order to crawl forward, the worm sticks it’s bristles in the ground and pulls itself along. Segmented worms have a closed circulatory system, like humans.