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Definition
| Eukaryotic, multicellular consumer with collagen and muscles and nerves and hox genes that control development |
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| outside layer of a developing embryo that will produce epidermis and nervous tissue |
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Definition
| inner layer of a developing embryo that will produce gut lining and the liver |
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| middle layer of developing embryo that will produce muscles, bones, blood, kidney, and gonads |
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Definition
| spiral and determinate: mouth develops from blastopore |
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Definition
| radial indeterminate: anus develops from blastopore |
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Definition
| dorsal hollow nerve cord, notochord, and pharyngeal gills. most have post anal tail and segmental myotomes |
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Definition
| Arose during the cambrian explosion, with the first neural crest cells and skull. 2 chambered heart |
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Definition
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Definition
| backbone and vertebrae: dorsal, ventral, and anal fins are all strengthened by rays |
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Definition
| Jaws and mineralized skeleton: suspension feeders or active carnivores, buoyancy from oil stored in the liver |
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Definition
| bony fish whose buoyancy is controlled by swim bladder, with breathing being accomplished by forcing water over the gills and out common opercular exit |
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Definition
| arose in late devonian. scales with 6 to 8 digits, poorly developed wrists and ankles, dorsal ventral movement, a middle ear and were quite large. although primarily aquatic, these tetrapods evolved to occasionally foray onto land |
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Definition
| No scales on skin, eggs must be laid in water, carnivorous, not large. Urodela, Anura, and Apoda |
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Term
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Definition
| forelimbs become wings, ability to fly and walk requires major changes in axial skeleton, high metabolic rates and four chambered heart with unidirectional lung and air sacs |
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Term
| Adaptations for living on land for amniotes |
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Definition
| cornified skin (reptilian epidermal scales), 3- chambered heart, and amniotic egg |
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