Curated OER
Invertebrate Chordates
Most chordates are easy to identify because of the specific classification criteria of their phylum. But what about tunicates? Young scientists read a short explanation about why tunicates, or sea squirts, are considered to be members of...
Curated OER
Invertebrate Chordates
For this invertebrate worksheet, students fill in the blank of four statements that focus on the characteristics of invertebrate chordates. Then students will number five statements in the order water flows through a tunicate. Then...
Sam Houston State University
Sam Houston State University: Chordate Characteristics
This site describes the characteristics of Chordates. There are also examples of two groups that show an affinity toward the phylum Chordata but do not actually exhibit the characteristics. This site also describes the history of the...
University of California
Ucmp: Introduction to Urochordata
This site introduces Urochordates and mentions the characteristics of Chordates that Tunicates exhibit. There are links to additional information about Chordate Characteristics
Other
Jeff's Coral Reef Gallery: Tunicates
This excellent underwater photo of a tunicate includes a short but informative description of tunicates in general (also known as "sea squirts").
A-Z Animals
A Z Animals: Animal Facts: Sea Squirt (Urochordata)
Provides photographs and a fact card about the sea squirt. Discusses the different species, physical characteristics, diet, predators, and reproduction.
California Academy of Sciences
California Academy of Sciences: Echinoderm Webpage
Resource provides a brief overview of echinoderms. Includes pictures and links for more information.
University of California
Ucmp: More on Morphology
A concise site that describes the four basic features that all chordates share.
CK-12 Foundation
Ck 12: Biology: Invertebrate Chordates
[Free Registration/Login may be required to access all resource tools.] Discusses the characteristics of the two major subphyla of chordates without a backbone.