The subphylum Urochordata constitutes a unique group of animals under the, Phylum Chordata. The members of this subphylum exhibit a high degree of diversity in form, habit and habitat. 1. AII urochordates are marine, sessile (Ascidiacea) or permanently . Dec 27, · Protochordates vs Euchordates Protochordata and Euchordataare two major groups of Phylum Chordata; therefore, before learning the difference between Protochordata and Euchordata, let us first briefly discuss vaginals.xyztes are the most advance and probably the most well-known group of organisms in the entire animal Kingdom including humans.
Multiple Choice Questions on Phylum Chordata 1. Which of the following structures is present in all the chordates? Which of the following organisms neither have notochord nor vertebral column in the adult stage? a) Cephalochordates. b) Herdmania In which of the following animals notochord does not persist throughout life? a) Amphioxus. The right answer for the question that is being asked and shown above is that: "c. Larval urochordates and adult cephalochordates." The statement that show all four chordate characteristics is that larval urochordates and adult cephalochordatesMissing: persist.
Phylum Chordata. Notochord is present in them. They have pharyngeal slits. Dorsal tubular nerve cord is present in them. Postanal tail is developed at some time in the chordates life. Thave bout 45, species. Phylum chordata have three sub phylums. A. Subphylum Urochordata. Notochord, nerve and postanal tail is present only in free swimming. Oct 17, · However, the larval stage (Figure 5) clearly exhibits chordate characteristics; note the notochord, the hollow nerve cord, the pharyngeal gill slits, and the postanal tail. In adults the gill slits are modified for filter feeding. Molecular evidence supports the idea that the urochordates are the group most closely related to the vertebrates.