nematode, also called roundworm, any worm of the phylum Nematoda. Nematodes are among the most abundant animals on Earth.
Why are nematodes called roundworms?
Structure and Function of Roundworms As their name suggests, they have a round body. This is because they have a pseudocoelom. This is one way they differ from flatworms. Another way is their complete digestive system.
Is Nematoda and Aschelminthes same?
The Aschelminthes (also known as Aeschelminthes, Nemathelminthes, Nematodes), closely associated with the Platyhelminthes, are an obsolete phylum of pseudocoelomate and other similar animals that are no longer considered closely related and have been promoted to phyla in their own right.
What nematode is most common in humans?
Structure. Ascaris lumbricoides is the largest and most common intestinal nematode of humans.
Is Earthworm a nematode?
Invertebrate animals commonly called "worms" include annelids (earthworms and marine polychaete or bristle worms), nematodes (roundworms), platyhelminthes (flatworms), marine nemertean worms ("bootlace worms"), marine Chaetognatha (arrow worms), priapulid worms, and insect larvae such as grubs and maggots.
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