Biology Final - Invertebrates II

37 Questions | Total Attempts: 560

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Biology Final - Invertebrates II - Quiz

It’s very hard to imagine what our lives would be like today if the human race somehow evolved in a way that allowed us to not rely on a backbone or even a bony skeleton in our lives. Luckily, there are many animals out there like the octopus and the crab that don’t have spines and still manage to get by just fine. What else can you tell us about these creatures we call invertebrates?


Questions and Answers
  • 1. 
    Organisms that have a layer of muscle that wraps their internal organs that is independent of their body wall muscles are:
    • A. 

      Acoelomates

    • B. 

      Pseudocoelomates

    • C. 

      Coelomates

    • D. 

      Diploblastic

  • 2. 
    Annelid worms that lack setae and parapodia are:
    • A. 

      Earthworms

    • B. 

      Polychaete worms

    • C. 

      Leeches

    • D. 

      Tube worms

  • 3. 
    The part of a mollusk that secretes their shell is the:
    • A. 

      Head

    • B. 

      Mantle

    • C. 

      Visceral mass

    • D. 

      Foot

  • 4. 
    The clitellum of an earthworm
    • A. 

      Contains the heart

    • B. 

      Produces the mucous for their cocoon

    • C. 

      Acts as a primitive respiratory system

    • D. 

      Is necessary for movement

  • 5. 
    Species that are segmented have an evolutionary advantage because
    • A. 

      Mutations can modify organs in specific segments to perform new tasks

    • B. 

      They have redundacy of their organs in case of failure

    • C. 

      Each segment can survive independently

    • D. 

      They can process moire information because they are highly cephalized

  • 6. 
    The only cephalopod that has retained its external shell is the
    • A. 

      Cuttlefish

    • B. 

      Octopus

    • C. 

      Nautilus

    • D. 

      Squid

  • 7. 
    Mollusks like snails that have a single shell are classified as
    • A. 

      Bivalves

    • B. 

      Gastropods

    • C. 

      Cephalopods

    • D. 

      Nematodes

  • 8. 
    Small tubules that collect wastes from the coelom of annelids and mollusks and descharge them from the body are called
    • A. 

      Spicules

    • B. 

      Radulae

    • C. 

      Bivalves

    • D. 

      Nephridia

  • 9. 
    Individual organisms that are segmented have a survival advantage as individuals because:
    • A. 

      Mutations can modify organs in specific segments to perform new tasks

    • B. 

      They have redundancy of their organs in case of failure

    • C. 

      Each segment can survive independently

    • D. 

      They can process more information because they are highly cephalized

  • 10. 
    Lobsters, crabs, and shrimp are members of the subphylum
    • A. 

      Urinamia

    • B. 

      Chordata

    • C. 

      Crustacea

    • D. 

      Chelicerata

  • 11. 
    An internal system of rigid material that supports the body is known as a(n)
    • A. 

      Hydrostatic skelton

    • B. 

      Exoskelton

    • C. 

      Endoskelton

    • D. 

      Pseudoskelton

  • 12. 
    One advance of the arthropods over the annelids is
    • A. 

      The greater specialization of segments

    • B. 

      The development of a coelom

    • C. 

      Having triploblastic instead of diploblastic

    • D. 

      Having an incomplete digestive system

  • 13. 
    Annelid worms that have parapodia and many setae are
    • A. 

      Earthworms

    • B. 

      Polychaete worms

    • C. 

      Leeches

    • D. 

      None of the above

  • 14. 
    The respiratory system of a lobster and crayfish is
    • A. 

      Composed of feathery gills found at the base of each walking leg

    • B. 

      Composed of a book lung that absorbs oxygen from the air

    • C. 

      Composed of small tubules that transport gases throughout the body

    • D. 

      Composed of their skin, which must remain moist at all times

  • 15. 
    The cephalochordates (eg. lancelets) probably evolved from
    • A. 

      Adult urochordates (eg. sea squirts, tunicates)

    • B. 

      Larval urochordates (eg. sea squirts, tunicates) that became sexually mature

    • C. 

      Vertebrates

    • D. 

      Larval echinoderms (eg. starfish) that became sexually mature

  • 16. 
    The larval stage of a sea star
    • A. 

      Has radial symmetry

    • B. 

      Has pentaradial symmetry

    • C. 

      Has bilateral symmetry

    • D. 

      Is saymmetrical

  • 17. 
    The organ system that removes ammonia, urea, and uric acid from the body fluids is the
    • A. 

      Circulatory system

    • B. 

      Respiratory system

    • C. 

      Excretory system

    • D. 

      Digestive system

  • 18. 
    Arthropods molt because
    • A. 

      Their old exoskelton does not grow with their body

    • B. 

      Their exoskelton does not grow within their body

    • C. 

      It helps them escape predators

    • D. 

      None of the above

  • 19. 
    Segmented worms are known as
    • A. 

      Nematodes

    • B. 

      Annelids

    • C. 

      Planarians

    • D. 

      Arthropods

  • 20. 
    Annelids, mollusks, and arthropods are classified as
    • A. 

      Coelomate deuterostomes

    • B. 

      Pseudocoelomate protosomes

    • C. 

      Pseudocoelomate deuterostomes

    • D. 

      Coelomate protosomes

  • 21. 
    Their function of the crop in an earthworm is
    • A. 

      Mechanical digestion

    • B. 

      Excretion of waste

    • C. 

      Absorption of nutrients

    • D. 

      Storage of food

  • 22. 
    The part of the mollusk body plan where most of their organs are found is the
    • A. 

      Shell

    • B. 

      Mantle

    • C. 

      Visveral mass

    • D. 

      Foot

  • 23. 
    In an open circulatory system
    • A. 

      Water is drawn into the mantle cavity to provide oxygen to body tissues

    • B. 

      Lungs branch into small tubules to provide oxygen to tissues

    • C. 

      Wastes are eliminated directly to the environment from the tissues

    • D. 

      Body tissues are bathed directly in blood

  • 24. 
    The water vascular system is characteristics of:
    • A. 

      Echinoderms only

    • B. 

      Echinoderms and chordates

    • C. 

      Chordates only

    • D. 

      Arthropods only

  • 25. 
    Organisms tha have a layer of muscle that weaps their internal organs that is independent of their body wall muscles are
    • A. 

      Acoelomates

    • B. 

      Pseudocolomates

    • C. 

      Coelomates

    • D. 

      Diploblastic

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