Tunicate - Wikipedia
Urochordata Lankester, 1877. A tunicate is an exclusively marine invertebrate animal, a member of the subphylum Tunicata (/ ˌtjuːnɪˈkeɪtə / TEW-nih-KAY-tə). This grouping 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 ...
Tunicate | Anatomy, Habitat & Adaptations | Britannica
2024年10月10日 · Tunicate, any member of the subphylum Tunicata (Urochordata) of the phylum Chordata. Small marine animals, they are found in great numbers throughout the seas of the world. Adult members are commonly embedded in a tough secreted tunic containing cellulose (a glucose polysaccharide not normally.
Tunicates—Not So Spineless Invertebrates - Smithsonian Ocean
The name “tunicate” comes from their outer covering, called the tunic, that protects the animal from predators, like sea stars, snails and fish. Unlike the sessile sea squirts, other kinds of tunicates float in the water their entire lives.
What's a Tunicate? - UW Departments Web Server
Tunicates, commonly called sea squirts, are a group of marine animals that spend most of their lives attached to docks, rocks or the undersides of boats. To most people they look like small, colored blobs.
Tunicate - Examples, Characteristics, Anatomy, and Pictures
2024年8月9日 · Tunicates are marine invertebrates of the subphylum Tunicata characterized by an outer exoskeleton made of tunicin (a type of cellulose). These animals possess dorsal nerve cords and notochords and are thus part of the phylum Chordata.
Sea squirt | Tunicate, Filter Feeding & Reproduction | Britannica
Sea squirt, any member of the invertebrate class Ascidiacea (subphylum Urochordata, also called Tunicata), marine animals with some primitive vertebrate features. Sea squirts are primarily sessile (permanently fixed to a surface), potato-shaped organisms found in all …
Tunicates: Current Biology - Cell Press
2016年2月22日 · Tunicates, also called urochordates, are an extremely diverse subphylum of the Chordata, a phylum that also contains the vertebrates and cephalochordates.
General features of tunicates | Britannica
Tunicates are either sessile (permanently attached), free-swimming, or planktonic (floating). The name tunicate derives from a secreted protective covering (the tunic) containing cellulose. Floating species often form colonies that may be 13 ft (4 m) long.
Tunicate - New World Encyclopedia
Tunicates (subphylum Urochordata or subphylum Tunicata) are marine, barrel-shaped invertebrates of the phylum Chordata. They are commonly called tunicates because they are covered by a tough covering, or tunic, and also are called sea squirts, because they squirt out water when touched (Towle 1989). As with all chordates—a group that includes ...
Tunicates: not just little squirts? - The Physiological Society
What are tunicates? Tunicates are a group of exclusively marine animals that include over 2,000 species divided into Ascidiacea (Aplousobranchia, Phlebobranchia, and Stolidobranchia) Thaliacea (Pyrosomida, Doliolida, and Salpida) and Appendicularia (Larvacea).