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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
show molting of cuticle  
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Mostly marine animals with radial symmetry, two germ layers, and stinging cells are called ______, which include jellyfishes, hydras, corals, and sea anemones.   show
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Select all of the following that have gills and a cranium but lack jaws.   show
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show -simple lungs -legs -eyelids and acute hearing -denser skeleton -three-chambered heart  
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show Radiata  
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taxonomic rank that consists of bilateral symmetry; mouth arises from second opening in embryo?   show
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show Ecdysozoa  
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show Lophotrochozoa  
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The ______ are the most numerous of all fishes.   show
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show birds  
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show roundworms  
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show protostome development and jointed appendages.  
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Select all of the characteristics of Phylum Echinodermata.   show
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Select all of the following that are in the group Bilateria.   show
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show placentals  
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show -mandibulates -trilobites -chelicerates  
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show -postanal tail -notochord -dorsal, hollow nerve cord -pharyngeal pouches or slits  
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At some point in their life cycle, all chordates have a postanal tail, ______, hollow nerve cord, and ______.   show
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Select all the animals that have segmented bodies.   show
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What is mesoglea?   show
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show organisms that crawl on a broad, flat foot; nudibranchs, limpets, snails, and slugs  
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What are Chitons?   show
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What are bivalves?   show
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What are cephalopods?   show
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What type of animal is segmented and has protostome development?   show
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show -bristles on each segment -ingest soil and eliminate indigestible particles -saddlelike cocoon near head to protect eggs  
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Grasping, clawlike mouthparts of spiders and scorpions are called?   show
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show the lungs  
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Select all of the correct statements about aquatic vertebrates called fishes.   show
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show Arthropods  
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What kind of animal body cavity forms completely within the mesoderm?   show
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One advantage of having a coelom is?   show
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Unsegmented roundworms include the?   show
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What group contains 60,000 species, most of which are vertebrates?   show
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Select all the chordates that have a cranium.   show
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show Esophagus  
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show ectotherm  
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show Craniates  
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show -most nonavian reptiles -invertebrates -fishes -most amphibians  
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show tunicates and lancelets.  
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Animals arose from a type of flagellated?   show
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Cylindrical, unsegmented worms with a pseudocoelom are classified into the phylum?   show
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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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show The more heart chambers, the better the separation of oxygen- rich blood from oxygen-poor blood, and the greater the efficiency with which blood delivers oxygen.  
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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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show are unusual amphibians: their bodies lack limbs. Thus, they resemble giant earthworms  
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What are Tuataras?   show
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What are monotremes?   show
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