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6 Cards in this Set
- Front
- Back
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5 characteristics of chordates
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1. pharyngeal (gill) slits
2. dorsal, tubular hollow nerve cord 3. dorsal rod-like structural support called the notochord 4. endostyle 5. post-anal tail |
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how do tunicates get food?
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suspension feeding
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subphylum urochordata: common name
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tunicates
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subphylum cephalochordata: common name
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lancelets
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characteristics of vertebrates:
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1. Vertebral column (backbone; functionally replaces notochord and surrounds dorsal hollow nerve tube)
2. two pairs of appendages (pectoral/pelvic fins, flaps of flesh associated with lateral spines in early fishes, four limbs in tetrapods) 3. bone (Calcium Phosphate salt) 4. neural crest tissue 5. circulatory system (heart) |
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transition to land characteristics:
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1. skin (protection from dessication
2. lungs (manage gas exchange internally) 3. claws or nails (protection of the outer endes of limbs and assists in repping and tearing of food or prey) 4. internal fertilization 5. amniotic egg 6. kidneys 7. air-breathing young |
