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Bio Chapter 21

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What characteristic do nematodes and arthropods have in common?   show
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show cnidarians  
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Select all of the following that have gills and a cranium but lack jaws.   show
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Select all the adaptations in amphibians that allowed them to become successful on land.   show
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taxonomic rank that consists of radial symmetry and two germ layers in embryonic development?   show
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show Deuterosomes  
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show Ecdysozoa  
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show Lophotrochozoa  
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show bony fishes  
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show birds  
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show roundworms  
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Arthropods are characterized by?   show
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Select all of the characteristics of Phylum Echinodermata.   show
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show -chordates -flatworms -roundworms -arthropods  
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What mammal group is currently the most diverse and is also called the eutherians?   show
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Select the main groups of arthropods.   show
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show -postanal tail -notochord -dorsal, hollow nerve cord -pharyngeal pouches or slits  
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show notochord; pharyngeal slits or pouches  
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show -vertebrates -earthworms -insects  
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What is mesoglea?   show
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What are gastropods?   show
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show marine animals with 8 flat shells that overlap  
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show Organisms that have a two-part, hinged shell; oysters, mussels, scallops and clams  
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show organisms that has arms connected to a head structure; squids, nautilluses, and octopuses  
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What type of animal is segmented and has protostome development?   show
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Select all the characteristics of earthworms.   show
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show chelicerae  
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What respiratory organ of terrestrial vertebrates is homologous with swim bladders of bony fishes?   show
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Select all of the correct statements about aquatic vertebrates called fishes.   show
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Nematodes are more closely related to ______ than to other phyla because both must shed and replace their tough external covering several times during development.   show
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show coelom  
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show flexibility in movement.  
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Unsegmented roundworms include the?   show
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show Chordates  
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show -vertebrates -hagfish  
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show Esophagus  
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What type of organism must rely on behaviors and the environment, rather than its own metabolism, to adjust its temperature?   show
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Hagfishes and vertebrates are both?   show
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Select all the examples of ectotherm animals.   show
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show tunicates and lancelets.  
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Animals arose from a type of flagellated?   show
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show Nematoda  
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show aquatic  
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show a series of enclosed, water-filled canals that end in hollow tube feet.  
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What are some advantages to having more heart chambers?   show
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show a sense organ that detects vibrations in nearby water & helps the fish to find prey & escape predation.  
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show Swim bladder  
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What are Caecilians?   show
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show are reptiles that closely resemble lizards, all  
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What are monotremes?   show
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