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Round worms belong to phylum Ascelminthes (nemathelminthes) ,a higher phylum than sponges (poriferans) and coelenterones.Round worms are bilaterally symmetric.which is considered as a superior quality.Also they are triploblastic and has a well developed muscular pharyx.Sexual dimorphism is also seen in round worms.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoSegmented worms are more complex that coelenterates because their bodies are made up of three layers of cells, rather than two layers like for coelenterates. Each layer of cells is filled with specialized tissues and organs.
Wiki User
∙ 14y agoThere are many differences between these organisms. The first thing would be the digestive systems. Many of the lower organisms have a digestive system in which nutrients are brought in through the same opening through which waste is expelled. Other organisms such as earth worms have separate openings for the two. The second tends to be slightly more efficient.
When speaking of the complexity of an organism, the term efficient is often uses.
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Are segmented worms more complex than coelenterates?
Segmented worms are more complex that coelenterates because their bodies are made up of three layers of cells, rather than two layers like for coelenterates. Each layer of cells is filled with specialized tissues and organs.
How are segmented worms more complex than flatworms?
Unsegameted worms offen are larger and their shape makes them more popular since flat worms aren't noticed so the more popular the more advance.
What are examples segmented worms?
All members of the Annelida phylum are segmented worms. These are more commonly known as earthworms.
Do Longer worms have less more or the same number of segments as short worms?
longer worms have more, less, or the same segmented
What class is an earthworm in?
the phylum is annelida, class is oligochaeta Earth worms are segmented worms so if you have any questions just google segmented worms and you will get more good sites than if you google earthworms.
Which is more similar a segmented worm or a mosquito and a cane fly?
Mosquitoes and (Crane) flies are all closely related. They are much more closely related to each other than to segmented worms.
What are the phyla's of annelids?
Annelids (Round, Segmented worms) ; Are animals, to be more precise, invertebrates (no backbone) They are round and segmented, have no legs, and may be parasitic, aquatic or beneficial. Examples are: Earthworm and Leech
What features do Segmented Worms have?
Segmented worms, also called annelids have body parts that are duplicated in each segment. If one segment is damaged, some annelids can survive. They also have setae, or two pairs of hairs found on each segment. These hairs grip the soil and get around more efficiently.
Where are segmented worms located?
Segmented worms comes under the phylum Annelida are so named because of their elongated, more or less cylindrical bodies divided by grooves into a series of ringlike segments. Perhaps the most familiar examples of segmented worms are the common earthworms or night crawlers, and the fresswater leeches. Actually, the more numerous and typical members of the phylum are marine, crawling or hiding under rocks, or living in burrows, or in tubes, or in the sediment.There are approximately 15,000 living species of annelids, placed in three major classes: the Polychaeta (mostly marine), the Oligochaeta (mostly terrestrial), and the Hirudinea (mostly freshwater).
How are earthworms and ascaris similar?
Annelids are segmented whereas roundworms are not. Annelids have a true coelom while roundworms have a pseudocoelom. Annelids have a more complex nervous system than roundworms. Annelids have a more complex circulatory system than roundworms.
What is a nematone?
Perhaps you mean Nematode. If so then it's a round worm similar to earth worms. There are several differences the most obvious being they are not segmented like earth worms. You can find more info here: http://en.wikipedia.org/wiki/Nematode
How are round worms and segmented worms different?
As opposed to earthworms, arthropods (crayfish) segments often become fused. Therefore, certain parts of a crayfish that looks like one piece, was once multiple pieces before they became fused together, so some segments were actually once more than just that one segment. An earthworm on the other hand, is just as many segments as are seen, and always has been.
