0
There are many different phyla of worms. The following three are the best-known. Some worms live on land in burrows, feeding on plant matter; others live in the sea or fresh water, filtering food from water.
Phylum: Platyhelminthes(flatworms )
Features: about 20,000 species flat, unsegmented bodies, with a mouth but no anus, many live in water
Phylum: Annelida(segmented worms)
Features: about 15,000 species segmented bodies, mostly burrowing, gut with mouth and anus, live on land and in water
Phylum: Nematoda(roundworms)
Features: about 25,000 species unsegmented bodies, gut with mouth and anus
FLATWORMSThere are about 20,000 species of flatworm. They have a solid, flat body that does not contain blood. Most flatworms are parasitic, but some are free-living.
MARINE FLATWORMMarine flatworms absorb oxygen through the surface of their very thin, flattened body. They creep along, rippling their body to help them move. Eyespots enable them to find their way around. Most are predators, eating tiny animals with the mouth situated on the underside of their body.
TAPEWORMTapeworms are parasites that live in other animals, including humans. They have hooks and suckers on their head to attach themselves to the animal's gut wall. They have no digestive system but absorb food through the surface of their body. They are hermaphrodites - they produce both eggs and sperm.
ROUNDWORMSRoundworms, or nematodes, are found almost anywhere and exist in huge numbers. As many of the roundworms are transparent, few people are aware of them.
ROUNDWORMThe roundworm has a long, round body that tapers towards the tail. The outer layer, or cuticle, is smooth. Muscles run along its body, but not around it. To move along, the worm contracts these muscles, thrashing backwards and forwards in a single plane, making C or S shapes.
SEGMENTED WORMSThis group divides into earthworms, bristleworms, and leeches. All have segmented bodies. The worms' bodies are fluid-filled, but the leeches are solid.
EARTHWORMEarthworms are formed from many segments. Only the gut runs through the whole body from head to tail. Worms have a circulatory system with blood vessels but no heart. The thickened area towards the front of their body secretes mucus, which binds mating worms together and forms a cocoon for eggs.
LEECHLeeches are parasites that live on the outside of other animals. They have specialized cutting jaws to bite through skin so that they can suck the animal's blood. Substances in their saliva prevent the blood from clotting and make the bite painless so that the animal is unaware it has been bitten. Leeches move by shifting one sucker forwards and then bringing the other one up behind it.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoThree types of segmented worms are earthworms, polychaeta, and leeches.
Wiki User
∙ 13y agoFlatworms, ribbon worms, and earthworms.
Wiki User
∙ 12y agoearth worms,tape worms,and pin worm
Wiki User
∙ 14y ago== ==
Add your answer:
Earn +20 pts
Do amoebas have a segmented body?
Nope they dont. Certain types of worms (polychates) have segmented bodies, as do crustaceans (lobsters, crabs, etc) and insects.
What are the common habitats of segmented worms?
segmented worms live in muddy & watery places
Are tape worms segmented?
Yes a tape worm is a segmented worm.
Are Platyhelminthes motile?
No. there are three kinds of worms: platyhelminthes- flatworms(not) nemahelminthes-roundworms(not) annelids-segmented worms( segmented)
Is a centipede a segmented worm?
No. Segmented worms are "annelids", like earthworms. Centipedes belong to the class chilopoda, along with other centipedes. They are also part of the phylum arthropoda, which is an entirely separate phylum from segmented worms.
What are the three major phyla of worms?
Flatworms are divided into two groups, parasitic and nonparasitic. The parasitic types, which live off of other organisms, consist of Cestoda, Trematoda, and Monogenea flatworms.
Can you name me 3 types of major worms?
Round worms, segmented worms, and flat worms
Which types of animals are evolved from segmented worms?
Heterotrophs
What are three major worm phyla?
flat worms,segmented worms, and round worms.
What types of animals are believed to have evolved from segmented worms?
arthropods
What is an other name for Worms?
There are three types of worms: segmented worms, or annelida, flat worms, or platyhelimenthese, and round worms, or nematoda. !
How are segmented worms classified?
how are segmented worms classified
Are ticks segmented worms?
No, ticks are not segmented worms.
Do amoebas have a segmented body?
Nope they dont. Certain types of worms (polychates) have segmented bodies, as do crustaceans (lobsters, crabs, etc) and insects.
What is a leech's phylum?
A leech belongs to the phylum Annelida, which includes segmented worms.
Facts about segmented worms?
Segmented worms, known as annelids, have bodies made up of repeated segments. They include common earthworms and marine bristle worms. Annelids have a true coelom and exhibit a high level of cephalization, with a well-developed nervous system and sensory organs. They play important roles in ecosystems by improving soil health and serving as food sources for other organisms.
What is unsegmented and segmented worm?
segmented have lines in them and non dont.
