parasites
digestive system
they live on their host's
Toxocara canis and cati, Ascaris lumbricoides, Baylisascarisprocyonis
It's something
Roundworms
Roundworms and flatworms do not have backbones. All worms are invertebrates.
The common name for phylum Nematoda is roundworms.
The wriggling movement of roundworms is a result of the fact that they do not have circular muscles, however, they do have lengthwise muscles. Roundworms are also known as nematodes.
Roundworms belong to the phylum Nematoda. They are classified based on their morphology, anatomy, and genetics. They are further categorized into different families, genera, and species based on specific characteristics and evolutionary relationships.
beetles
Yes, tapeworms are common parasitic flatworms
Roundworms are classified as invertebrates because they lack a backbone or spinal column, which are defining characteristics of vertebrates. Instead, roundworms have a simple, unsegmented body structure with a tough outer cuticle for protection.
roundworms: Ascaris lumbricoides
In my search, the nemathelminthes is also a flatworm. An example of flatworm is planaria, it is also known as hermaphroditic animal because a hermaphroditic animal have a female and male organs. The planaria also has a line in middle of its body. It will be cut in to two and another planaria is produced.