ELK HORN CORAL AND A TREE

 By Mary O'Leary

 
  • QUESTION: What are some similarities and differences between elk horn coral and a tree/

     

    HYPOTHESIS: I believe they both need light to grow. Coral grow in water, and trees grow in air and soil. They are made up of different materials.

     

    PROCEDURE: Observe an elk horn coral and a tree. Compare the similarities and differences you see.

     

     

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    DATA:

     

    ELK HORN CORAL

     

    TREE

     

    Animal / Plant

     

    animal

     

    plant

     

    Fixed / Mobile

     

    fixed

     

    fixed

     

    Single organism / collection of many organisms

     

    collection of many organisms

     

    single organisms

     

    Material in which it lives

     

    water

     

    air and soil

     

    Has a rigid skeleton of

     

    calcium carbonate

     

    wood and cellulose

     

    Animals which live in its branches

     

    fish

     

    birds / squirrels

     

    Animals which eat it

     

    fish

     

    birds

     

    Growth affected by movement

     

    branches grow parallel to current or wave action

     

    wind can cause a tree to grow slanted

     

    Need light to live

     

    photosynthetically produced food

     

    photosynthetically produced food

     

    Reproduction

     

    asexual

     

    asexual

     

  • CONCLUSION: Elk horn coral and trees both need light to survive. They are both fixed and other animals live among their branches. They also have many differences.

     

      

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