Simple Invertebrates Chapter 28-1 Sponges

27 Questions | Total Attempts: 64

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Simple Invertebrates Chapter 28-1 Sponges

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Questions and Answers
  • 1. 
    A sponge has the same basic structure as which of the following
    • A. 

      A bag

    • B. 

      A building block

    • C. 

      Piece of pie

    • D. 

      Starfish

  • 2. 
    What is an amoebocyte?
    • A. 

      Part of the amoeba gland that produces the peptide hormone adrenaline, or epinephrine

    • B. 

      An amoeba-like cell that supplies nutrition and removes wastes from sponge body cells

    • C. 

      Compound originally derived from the white willow tree

    • D. 

      Neurotransmitter that stimulates amoebas

  • 3. 
    What do amoebocytes do?
    • A. 

      Wander about the mesenchyme, supplying the rest of the sponge's cells with nutrients, and carrying away other wastes

    • B. 

      Wander about the mesencytes, supplying the rest of the sponge's cells with nutrients, and carrying away other wastes

    • C. 

      Wander about the mesoderm, supplying the rest of the sponge's cells with nutrients, and carrying away other wastes

    • D. 

      Wander about the mesenderm, supplying the rest of the sponge's cells with nutrients, and carrying away other wastes

  • 4. 
    How do the other cells of the sponge survive if the collar cells take in all the food
    • A. 

      They feed of the collar cells

    • B. 

      They swim outside the sponge to find food

    • C. 

      They produce their own food by photosynthesis

    • D. 

      The collar cells release nutrients into the mesenchyme

  • 5. 
    Water enters a sponge by passing through      blank     in the sponge's body wall
  • 6. 
    The inside of a sponge is lined by cells called    blank    .
  • 7. 
    The beating of each choanocytes     blank draws water down through its collar.
  • 8. 
    Blank    like bacteria and algae are trapped in the collar.
  • 9. 
    These organisms the move toward the cell's cytoplasm, where they are ingested through    blank.
  • 10. 
    For the sponge's body to function effectively, the:
    • A. 

      Body wall must be rigid enough to prevent the sponge from collapsing in on itself

    • B. 

      Body wall must be soft enough to prevent the sponge from collapsing in on itself

    • C. 

      Cell wall must be rigid enough to prevent the sponge from collapsing in on itself

    • D. 

      Cell wall must be soft enough to prevent the sponge from collapsing in on itself

  • 11. 
    The skeleton of most sponges is not a fixed framework like your skeleton, but rather a:
    • A. 

      Network of vessles

    • B. 

      Network of nutrients and minerals

    • C. 

      Diffuse network of fibers or minerals

    • D. 

      Network of cartilage

  • 12. 
    The skeletons of most sponges are made of a resilient flexible protein fiber called   blank
  • 13. 
    A few sponges have more brittle skeletons composed of tiny hard needles of silica or calcium carbonate called   blank.
  • 14. 
    Sponges will    blank when cut into pieces.
  • 15. 
    When the pieces are returned to the ocean, each bit of sponge, however small, will grow into      blank.
  • 16. 
    Sponges frequently reproduce by simply     blank.
  • 17. 
    When sponges reproduce by breaking into fragments, this is a form of    blank.
  • 18. 
    What are gemmules?
    • A. 

      The diploid phase that produces gametes

    • B. 

      The haploid phase that produces gametes

    • C. 

      Organisms that produce both sperm and eggs

    • D. 

      Clusters of amoebocytes encased withing protective coats

  • 19. 
    When living conditions become hars, some freshwater sponges ensure their survival by forming    blank     .
  • 20. 
    Most sponges are not exclusively:
    • A. 

      Male or female

    • B. 

      Male

    • C. 

      Female

  • 21. 
    A sponge is a     blank      , an organism that produces both eggs and sperm.
  • 22. 
    An organism that produces both eggs and sperm is a:
    • A. 

      Asexual

    • B. 

      Hermaphrodite

    • C. 

      Transvestite

    • D. 

      Heteroaphrodite

  • 23. 
    Eggs and sperm are produced:
    • A. 

      Eggs before sperm

    • B. 

      Outside the sponge

    • C. 

      At different times

    • D. 

      Sperm before eggs

  • 24. 
    Eggs and sperm are produced at different times, so    blank    is avoided.
  • 25. 
    The advantage of hermaphroditism is that:
    • A. 

      The sperm of any individual can fertilize the egg of any other individual

    • B. 

      The sperm of any individual can fertilize itself

    • C. 

      The sperm of any individual can go into dormancy if no egg is present

    • D. 

      The sperm of any individual can fertilize any plant on land

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