Watch the Crash Course video, Chordates as an introduction to the phylum. Then move on down the page to find more tasks you need to complete.

Vertebrates are members of the kingdom Animalia and the phylum Chordata (Figure). Recall that animals that possess bilateral symmetry can be divided into two groups—protostomes and deuterostomes—based on their patterns of embryonic development. The deuterostomes, whose name translates as “second mouth,” consist of two phyla: Chordata and Echinodermata. Echinoderms are invertebrate marine animals that have pentaradial symmetry and a spiny body covering, a group that includes sea stars, sea urchins, and sea cucumbers. The most conspicuous and familiar members of Chordata are vertebrates, but this phylum also includes two groups of invertebrate chordates.

Complete the tasks on the list below:

• Go to this page, http://cnx.org/contents/GFy_h8cu@10.53:VB2yhrAh@8/Chordates, and read the entire page
• The QR codes on the page take you to this video
• Chordate Evolution 
• Use the Glossary at the bottom of the page to help with the vocabulary for this week
• Use the Review Questions and Free Response questions to check for understanding

Download for free at http://cnx.org/contents/185cbf87-c72e-48f5-b51e-f14f21b5eabd@10.53