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5 Cards in this Set
- Front
- Back
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Chordates; Subphylum Urochordata; Tunicate |
~ Common Name: Sea Squirts ~ Grow in colonies ~ Marine ~ Eat Plankton ~ Notochord: Larvae (yes), adult (no) ~ Dorsal Nerve Cord: Larvae (yes), adult (no) ~ Respiration is achieved through a pharyngeal basket pierced by gill slits ~ Filter Feeders ~ Head: No ~ Open Circulation ~ No segmentation ~ No muscle arrangement ~ No jaws ~ No appendages ~ Adults are sessile |
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Chordates; Subphylum Cephalochordata; Lancelet |
~ Common name: Lancelet ~ Small jawless, fishlike ~ Notochord ~ Dorsal nerve cord ~ Respiration is achieved by pharyngeal region with many gill slits(~100) ~ H2O passes through pharynx and traps food in mucus ~Have a head ~ Closed circulation ~ Have segmentation; muscles and nerves ~ muscles are V shaped and paired on either side of the body; branch from nerves ~ No jaws ~ No Appendages ~ Movement is achieved by bending bodies back and forth |
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Tunicate Diagram |
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Lancelet Diagram |
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Traits shared by all chordates |
1. Dorsal hollow nerve tube 2. Notochord > backbone of higher organization 3. Gil slits (pouches) 4. Post anal tail |
