Marine Invertebrates Overview
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Questions and Answers

What is a defining characteristic of marine invertebrates?

  • Largest animals in the ocean
  • Ability to live on land
  • Presence of a backbone
  • Absence of a backbone (correct)

    • Where can sponges be found?

  • In rivers and lakes
  • On land in forests
  • Flying in the air
  • On the seafloor and atop rocks (correct)

    • Why are sponges known for their porous texture?

  • To work as a filter (correct)
  • To camouflage from predators
  • To float on the water surface
  • To attract prey

    • What is a reason for sponges' ability to survive in hostile conditions?

    <p>Capability to grow and thrive in harsh environments</p> Signup and view all the answers

    Why were sponges once used as household cleaning tools?

    <p>For their famous shape and texture</p> Signup and view all the answers

    Which process is used by some sponges for reproduction?

    <p>Regeneration</p> Signup and view all the answers

    What is a unique characteristic of cnidarians?

    <p>They have a digestive chamber</p> Signup and view all the answers

    How do some cnidarians acquire food?

    <p>By filtering water through their pores</p> Signup and view all the answers

    What is the range of sizes for cnidarians?

    <p>They vary greatly, from millimeters to the width of a football field</p> Signup and view all the answers

    Which phylum includes jellyfish and coral?

    <p>Cnidaria</p> Signup and view all the answers

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