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Cephalochordates, because of their remarkable morphology, they have proved crucial in understanding the morphology and evolution of chordates in general -- including vertebrates.
Cephalochordates have all the typical chordate features. The dorsal nerve cord is supported by a muscularized rod, or notochord. The pharynx is perforated by over 100 pharyngeal slits or "gill slits", which are used to strain food particles out of the water. The musculature of the body is divided up into V-shaped blocks, or myomeres, and there is a post-anal tail. All of these features are shared with vertebrates. On the other hand, cephalochordates lack features found in most or all true vertebrates: the brain is very small and poorly developed, sense organs are also poorly developed, and there are no true vertebrae.
What else can I help you with?
What is genus of vertebrates?
There isn't any genus for vertebrates, but there's a phylum for them. Their phylum is Chordata.
Why should humans and cats be considered more closely related than humans and any of the other vertebrates?
All mammals produce milk, have some form of hair at some point in their life, are warm blooded and have a 4 chambered heart.
Which of the following findings led to the conclusion that sea squirts are more closely related to vertebrates than scientists had previously thought?
Probably the discovery of the tadpole larva and the Larvacea group. They resemble the lancelet something awful. But the neoteny theory is discarded now - it´s thought some lancelets took on a sessile lifestyle and others gave rise to the vertebrates. And some just stayed lancelets, of course ;)
What is more closely related to octupus?
are salamanders or snails closely related to an octupus
Which group of fishes are most closely related to the ancestral amphibians?
The group of fishes most closely related to ancestral amphibians are the lobe-finned fishes, which include the coelacanths and lungfishes. These fishes share certain characteristics with amphibians, such as limbs with digits and lungs or lung-like structures, indicating a close evolutionary relationship.
Are reptiles more closely related to fishes or invertebrates?
Since they are vertebrates, they are most closely related to fish.
What group of vertebrae is most closely related to birds?
The group of vertebrates most closely related to birds are probably the dinosaurs.
What phylum is most closely related phylogenetically to first vertebrates?
The phylum Chordata is most closely related phylogenetically to the first vertebrates. Chordates share a number of characteristics with vertebrates, such as having a notochord, dorsal nerve cord, and pharyngeal slits. Cells within the notochord further develop into the vertebrae that define vertebrates.
Why is a shark more closely related to a bird than it is to a starfish?
Both birds and sharks are vertebrates whereas starfish are not.
Are stepcousins to closely related to date?
In some locations, they may be too closely related to marry. But this is a peculiarity of United States culture; in quite a few countries, cousins are regarded as ideal marriage partners.
What is genus of vertebrates?
There isn't any genus for vertebrates, but there's a phylum for them. Their phylum is Chordata.
Why is an earthworm more closely related to an grasshopper than to a snake?
Earthworms and grasshoppers are invertebrates (no backbone) and have exoskeletons. Snakes are vertebrates (have backbones).
Are echinoderms vertebrate or invertebrate?
they are in invertebrate-- A bit more info --Yes, they are indeed an invertebrate, but they are the closest invertebrate phylum to vertebrates. The only ones which are closer are the group Urochordata, the cephalochordates and the hagfish (which is a craniate, not a vertebrate)We are more related to starfish and sea cucumbers than to insects...
Is woodlice vertebrates?
Nope, Woodlice are invertebrates, which means that they do not have a backbone. Woodlice are not insects but crustaceans and are more closely related to crabs than to insects.
What is a chorodate?
I think you got the spelling wrong, and it is "Chordates(phylum Chordata) are animals which are either vertebrates or one of several closely related invertebrates."
Are foxes more closely related to sea stars or to snakes?
Foxes are more closely related to snake than sea stars. Foxes and snakes share similar ancestors and both have vertebra that make up their spines.
How closely related is a lobster to a spider?
About as closely as we are to frogs. Crustacea and Chelicerata (arachnids) are different classes in the same phylum (Arthropoda), just like mammals and amphibians are different classes in the phylum Chordata (vertebrates).
