Invertebrate Practice Test

59 Questions | Total Attempts: 4084

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Invertebrate Practice Test

Without our backbones, our bodies would crumble to the ground like a house of cards. They provide us with frame and structure so that the activities we undertake daily can even be done. So, what about animals that don’t have this same support? How do animals without a bony skeleton stay upright and move about? Take this quiz on invertebrates to find out!


Questions and Answers
  • 1. 
    What type of body plan to sponges have?
    • A. 

      Asymmetrical

    • B. 

      Bilateral

    • C. 

      Radial

  • 2. 
    What type of digestive system to sponges have?
    • A. 

      2 way: in through mouth, out through anus

    • B. 

      1 way: in through mouth, out through anus

    • C. 

      2 way: in through mouth, out through mouth

  • 3. 
    Sponges lack:
    • A. 

      Bones, specific body plan, and flagella

    • B. 

      Organs, specific body plan, and tissue

    • C. 

      Organs, specific body plan, and teeth

  • 4. 
    Sponges reproduce how?
    • A. 

      Sexually and asexually

    • B. 

      Just by budding

    • C. 

      Just sexually

  • 5. 
    Sponges exchange gas through?
    • A. 

      Diffusion

    • B. 

      Breathing

    • C. 

      Spicules

  • 6. 
    What helps with sponge excretion?
    • A. 

      Collar cells

    • B. 

      Diffusion

    • C. 

      Amoebocytes

  • 7. 
    Definition of collar cells:
    • A. 

      Whip like flagella that power the pump

    • B. 

      Pick up food from collar cells

    • C. 

      Help with reproduction

  • 8. 
    Spicules help the sponge by:
    • A. 

      Helping to identify the type of sponge, gives it form, makes it rigid

    • B. 

      Helping to identify the collar cells, makes it rigid

    • C. 

      Makes it rigid

  • 9. 
    Definition of amoebocytes:
    • A. 

      Pick up food from the collar cells, digest it, give out nutrients to other cells, and transport oxygen

    • B. 

      Transport oxygen

    • C. 

      Gives it form, helps dispose of wastes, distributes nutrients, power the pump, participate in reproduction

  • 10. 
    First animals to have sensitive tentacles?
    • A. 

      Cephalopods

    • B. 

      Crustaceans

    • C. 

      Arthropods

    • D. 

      Cnidarians

  • 11. 
    • A. 

      Cnidarians

    • B. 

      Gastropods

    • C. 

      Platyhelmenthis

  • 12. 
    First group to have a head/brain?
    • A. 

      Bivalves

    • B. 

      Flatworms

    • C. 

      Roundworms

  • 13. 
    Cnidarians have what 2 types of body form?
    • A. 

      Medusa body form, polyp

    • B. 

      Medusa body form, asymmetrical

    • C. 

      Radial

  • 14. 
    Cnidarians what type of body plan?
    • A. 

      Asymmetrical

    • B. 

      Radial

    • C. 

      Bilateral

  • 15. 
    Cnidarians reproduce:
    • A. 

      Sexually and asexually

    • B. 

      Sexually

    • C. 

      Asexually

  • 16. 
    Describe nematocytes:
    • A. 

      They are the stinging cells which stuns a prey

    • B. 

      They chill on the beach

    • C. 

      They are the actual tentacle which darts out to sting a prey

  • 17. 
    The digestive system of a Cnidarian?
    • A. 

      2 way

    • B. 

      1 way

  • 18. 
    Types of Cnidarians:
    • A. 

      Hydra, portugese man-of-war, sea urchin

    • B. 

      Hydra, portugese man-of war, sea anemones, jellyfish

    • C. 

      Jellyfish, sea anemones, octopi, and squids

  • 19. 
    Cnidarian brain:
    • A. 

      Similar to the human brain

    • B. 

      Nerve net (cluster of nerves)

  • 20. 
    Cnidarians exchange gas through:
    • A. 

      Diffusion

    • B. 

      Water vascular system

    • C. 

      Gills

    • D. 

      Lungs

  • 21. 
    What type of body plan to flatworms/roundworms have?
    • A. 

      Asymmetrical

    • B. 

      Radial

    • C. 

      Bilateral

  • 22. 
    What are Flatworms?
    • A. 

      Acoelomates

    • B. 

      Pseudocoelomate

    • C. 

      Coelomates

  • 23. 
    Flatworms are the first. . .
    • A. 

      Things to have legs

    • B. 

      Things to have eyes

    • C. 

      Mobile hunters

  • 24. 
    Digestion of a flatworm:
    • A. 

      2 way

    • B. 

      1 way

  • 25. 
    How do flatworms reproduce?
    • A. 

      Sexually

    • B. 

      Asexually

    • C. 

      Both