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.
Help!
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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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