You spelt it wrong.
I think they do, from what I recall. As long as you're talking about the beginnings of a "tube"ish thing.
Flatworms, belonging to the phylum Platyhelminthes, do not have a pseudocoelom. They are acoelomate animals, meaning they lack a body cavity between the digestive tract and the outer body wall. Instead, their space between tissues is filled with a solid tissue called mesenchyme. This distinguishes them from organisms that do possess a pseudocoelom, such as nematodes.
no
Nematodes have a pseudocoelom (a body cavity that is not completely lined by mesoderm), whereas flatworms have an acoelomate body plan (lack a body cavity). This means that nematodes have a body cavity, while flatworms do not have a true body cavity.
Flatworms are considered acoelomate, since they have no body cavity, and roundworms are pseudocoelomate because they have a body cavity, but it is not derived from the splitting of the mesoderm tissue. Also, flatworms only have one opening in their digestive system unlike roundworms with two.
Nematodes, or roundworms, are considered more advanced than flatworms due to their more complex body structure and physiological features. They possess a complete digestive system with a distinct mouth and anus, allowing for more efficient nutrient processing. Additionally, nematodes have a more developed muscular system and a pseudocoelom, which provides better organ organization and function. Furthermore, their cuticle allows for greater adaptability to diverse environments compared to the simpler body plan of flatworms.
No, arthropods are coelomates
C. hemocoel
Ascaris has a pseudocoelom, which is a body cavity that is partially lined by mesoderm but lacks a full peritoneal lining like a true coelom.
facts about flatworms
Yes flatworms are invertebrates
pseudocoelom
A pseudocoelom is a body cavity that is not fully lined with mesoderm, while a coelom is a body cavity that is fully lined with mesoderm. The coelom provides more support and protection for internal organs, while the pseudocoelom may limit organ movement and function.