What are the features that differentiate trematodes from Turbellarians?
Turbellaria are free-living, carnivorous flatworms that eat other small invertebrates and dead or decaying animals. Trematoda, or flukes, are obligate parasitic flatworms that cannot survive without a host. Most flatworms in the class Trematoda have a complex life cycle that involves two or more hosts.
What is the difference between the tapeworms Cestodes and the flukes trematodes?
Tapeworms belong to the class cestode, and they are flat, long worms which reside on the intestines. The key difference between the flukes and the tapeworms is the shape of the organism. The flukes appear as leaf-shaped whereas the tapeworms are elongated in shape.
What are Cestodes and trematodes?
Cestodes (tapeworms) and Trematodes (flukes) are two Classes of the Phylum Platyhelminthes. Tapeworms live in the intestines of vertebrates and their larval forms occur in the flesh of animals on which these vertebrates feed.
What is the difference between Cestodes and Nematodes?
The key difference between Nematodes and Cestodes is that Nematodes are roundworms whereas Cestodes are flatworms. The kingdom Animalia is comprised of several phyla. Phylum Platyhelminthes includes worms that are flattened dorsoventrally and acoelomates. Cestoda is parasitic worm class of phylum Platyhelminthes.
What are the characteristics of Cestodes?
Cestodes are long, flat, ribbon-like organisms commonly called tapeworms. The head, or scolex, has one or more hooked suckers for firm attachment to the host. Behind the head is the neck which is the growing region. The body consists of segments, each containing reproductive organs.
What is the similarities between tapeworm and flukes?
Both flukes and tapeworms are parasites with vertebrate hosts, including human hosts. Flukes live in the host’s circulatory system or liver. Tapeworms live in the host’s digestive system. Usually, more than one type of host is required to complete the parasite’s life cycle.
Do trematodes have a scolex?
Each of these segments contains both male and female reproductive organs that allow them to self-fertilize. While cestodes are capable of self-fertilization, like trematodes, trematodes do not have segmented bodies attached to a scolex.
What are the characteristics of trematodes?
Trematodes are flattened oval or worm-like animals, usually no more than a few centimetres in length, although species as small as 1 millimetre (0.039 in) are known. Their most distinctive external feature is the presence of two suckers, one close to the mouth, and the other on the underside of the animal.
What are the characteristics of cestodes?
What are the basic differences between the two order of Cestodes?
When it comes to their shape, the cestodes have a tape-like, segmented body, whereas the trematodes have a leaf-like and unsegmented body. The cestodes have a head that has suckers and, in some cases, hooks. The trematodes have a head with suckers but no hooks.
What is the difference between a cestode and a trematode?
One of the other big differences between cestodes and trematodes is the fact that unlike cestodes, trematodes have a digestive tract that runs from the oral cavity to the esophagus where it’s then divided into the bilateral ceca. As such, it’s able to consume food material through the oral cavity and digest them.
What is the difference between a cestode and a nematode?
Cestodes have a long, ribbon-like, dorsoventrally flattened body while nematodes have a cylindrical body tapered at each end. Cestodes have a neodermal cuticle called tegument while nematodes have a thick, collagenous cuticle. Cestodes are multisegmented worms while nematodes are unsegmented worms.
What does cestodes mean?
Cestodes & Trematodes. Cestodes are parasitic worms of the taxonomic class of Cestoda. One commonly used lay-term you may be familiar with, one that refers to some cestodes, is tapeworms. Trematodes are parasitic worms of the taxonomic class of Trematoda.
What is the difference between cestodes and hermaphrodites?
Furthermore, cestodes are acoelomates without a body cavity. Significantly, their flat body facilitates the perfusion of all tissues. On the other hand, cestodes are hermaphrodites; each segment of the body contain both male and female sex organs.