What are the 4 parts of a chordate?
Animals in the phylum Chordata share four key features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.
What are the 4 body structures found only in chordates?
In chordates, four common features appear at some point during development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.
What are the difference in characteristics between Urochordata and Cephalochordata?
The main difference between Urochordata and Cephalochordata is that Urochordata consists of a notochord extended in the head region whereas Cephalochordata contains the notochord in the posterior region of the body.
What organisms belong to Urochordata?
Examples of Animals in the Subphylum Urochordata
- Sea Pork. Sea Pork (Aplidium stellatum) is a type of sea squirt found along the eastern coast of North America and into the Gulf of Mexico.
- Golden Star Tunicate.
- Sea Peach.
- Ciona Intestinalis.
What is an example of Cephalochordata?
The example of a cephalochordate is called amphioxus which means both ends (amphi-) are sharp (-oxus). Amphioxus is a marine animal, and the several genera are distributed worldwide, especially in warm, shallow oceans where they burrow tail first into the sand and feed by filtering water.
What is the larva of Cephalochordata?
Larval tunicates swim for a few days after hatching, then attach to a marine surface and undergo metamorphosis into the sessile adult form. Lancelets (Cephalochordata) are marine organisms that possess all features of chordates; they are named Cephalochordata because the notochord extends into the head.
How Cephalochordata differ from Hemichordata?
In cephalochordates, notochord and nerve cord extend the entire length of body and is present throughout life. Hemichordates, on the other hand, lack notochord and true dorsal nerve cord.
What are the characteristics of Urochordata?
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 gut.
- Body has no coelomic body cavity.
- Body wholly enclosed in a ‘tunic’ of secreted protein and cellulose-like material.
What are examples of Urochordata?
Ascidians
ThaliaceaLarvacea
Tunicate/Lower classifications
What is Urochordata and Cephalochordata?
The main difference between Urochordata and Cephalochordata is the location and presence of notochord. In urochordates, the notochord is present in the larval tail, whereas, in cephalochordates, the notochord is present throughout the life and extends from the head to the tail region.