Characteristics of Urochordata: Possesses a Notochord, a hollow nerve cord and a post anal tail. Body has more than two cell layers and includes tissues and organs. Has a U shaped bizard.xyzg: persist. Jun 02, · However, the characteristics of Phylum Chordata are only present in Tunicates during the larval stage. Furthermore, Tunicates are urochordates, and amphioxus are cephalochordates. Amphioxus has the characteristcs of Phylum Chordata in the adult stage. Because it shows all the characteristics of Phylum Chordata during the adult stage.
A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata / tj uː n ɪ ˈ k eɪ t ə /.It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates).The subphylum was at one time called Urochordata, and the term urochordates is still sometimes used for these animals. They are the only chordates that . origins of chordate traits such as the nerve cord, notochord, gill slits and tail. The anteroposterior maps of gene expression domains for 38 genes of chordate neural patterning are highly similar for hemichordates and chordates, even though hemichordates have a diffuse nerve-net. About 40% of the domains are not present in protostome maps.
The Phylum Chordata encompasses a vast group of diverse animals ranging from ascidians to man (Fig. ). A few characteristics like Notochord, Dorsal hollow tubular nerve cord and Pharyngeal gill-slits unite these diverse animals under a common phylum. They differ from the non-chordates significantly by the position of nerve cord. Chordate, any member of the phylum Chordata, which includes the vertebrates, the most highly evolved animals, as well as two other subphyla—the tunicates and cephalochordates. Some classifications also include the phylum Hemichordata with the bizard.xyzg: persist.