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The main difference between Platyhelminthes and Nematoda is that Platyhelminthes consists of flatworms with a thin, dorso-ventrally flattened body whereas Nematoda consists of a cylindrical body, which is tapered to fine ends at each end. Tapeworms, Turbellaria, Trematoda, and Monogenea examples of Platyhelminthes.
- What is the main difference between Platyhelminthes and nematodes?
- How does Platyhelminthes differ from annelids?
- What makes Platyhelminthes DIfferent?
- What distinguish Nemertines from Platyhelminthes?
- Are nematodes and Nemathelminthes same?
- What is the difference between Aschelminthes and Nemathelminthes?
- What characteristics of phylum Annelida distinguish it from other phyla?
- What is the difference between Nematoda and Annelida?
- What are the morphological similarities and differences between nematodes and annelids?
- How are segmented worms different from roundworms?
- What are the main differences between the Cnidaria and the Platyhelminthes phyla?
- What is the main characteristic for phylum Nemertea?
- How are flatworms similar to ribbon worms?
What is the main difference between Platyhelminthes and nematodes?
Nematodes are pseudocoelomates, while Platyhelminthes are acoelomates. Species of nematodes are higher than that of Platyhelminthes. Platyhelminthes have an incomplete gut whereas nematodes have a complete one. Unlike in nematodes, Platyhelminthes have flame cells to do the excretory functions.
How does Platyhelminthes differ from annelids?
Flatworms (phylum Platyhelminthes) are simple animals that are slightly more complex than a cnidarian. Roundworms (phylum Nematoda) have a slightly more complex body plan. Segmented worms (phylum Annelida) are the most complex animals with worm-like body plans. ... Worms are invertebrate animals with bilateral symmetry.
What makes Platyhelminthes DIfferent?
Distinguishing features. Platyhelminthes are bilaterally symmetrical animals: their left and right sides are mirror images of each other; this also implies they have distinct top and bottom surfaces and distinct head and tail ends.
What distinguish Nemertines from Platyhelminthes?
Nemertines, unlike flatworms (Phylum Platyhelminthes), have a blood vascular system through which contractile vessels and body muscle contractions pump blood. ... Nemertina is the first phylum with openings at both ends of the digestive tract; solid waste leaves through the anus.
Are nematodes and Nemathelminthes same?
The nematodes (/ˈnɛmətoʊdz/ NEM-ə-tohdz or /ˈniːm-/ NEEM- Greek: Νηματώδη; Latin: Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments.
What is the difference between Aschelminthes and Nemathelminthes?
Answer: 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 characteristics of phylum Annelida distinguish it from other phyla?
What characteristics of phylum Annelida distinguish it from other phyla? It has a 2-part head and there's a coelomic compartment in each segment surrounded by a layer of mesodermal epithelium. The body wall and coelom contain strong circular and longitudinal muscles for swimming and burrowing.
What is the difference between Nematoda and Annelida?
The main difference between Nematoda and Annelida is that Nematoda has a cylindrical body with tapered ends whereas Annelida has a cylindrical body, which is segmented. Therefore, Nematoda is called roundworms while Annelida is called segmented worms.
What are the morphological similarities and differences between nematodes and annelids?
Phylum Nematoda and Annelida are two phyla of kingdom Animalia. Nematodes are cylindrical and roundworms with un-segmented bodies. Annelids are segmented worms. They possess a true coelom, unlike nematodes which have a pseudocoelom.
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.
What are the main differences between the Cnidaria and the Platyhelminthes phyla?
Cnidarians are diploblastic, whereas Platyhelminthes are triploblastic. Platyhelminthes possess bilaterally symmetrical, soft, worm-like elongated bodies, whereas cnidarian possess radially symmetrical, soft, medusa-like or polyp-like body forms. Cephalization is present in Platyhelminthes, but not in cnidarians.
What is the main characteristic for phylum Nemertea?
Animals in phylum Nemertea show a flattened morphology, that is, they are flat from front to back, like a flattened tube. Nemertea are soft and unsegmented animals (Figure 1). A unique characteristic of this phylum is the presence of a proboscis enclosed in a rhynchocoel.
How are flatworms similar to ribbon worms?
The affinities of the nemerteans may lie with the flatworms, although molecular evidence generally fails to support this view; both groups have similar types of embryonic development and the same basic body plan. Unlike the flatworms, however, the ribbon worms have a complete gut and a circulatory system.
