Can bees distinguish shapes inquiry - PowerPoint PPT Presentation

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Can bees distinguish shapes inquiry

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Can bees distinguish shapes inquiry What is adaptive advantage shape discrimination? Hypotheses Bees cannot distinguish between solid shapes Bees cannot distinguish ... – PowerPoint PPT presentation

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Title: Can bees distinguish shapes inquiry


1
Can bees distinguish shapes inquiry
What is adaptive advantage shape discrimination?
2
Hypotheses
  • Bees cannot distinguish between solid shapes
  • Bees cannot distinguish between solid shapes
    broken lines

3
Protocol
  • Same as for colors, but place dish of 25 sugar
    water on shape you wish to test. Conduct
    separate test for solid and broken patterns.
  • Then test one solid shape among broken patterns
  • Conclude by testing one broken pattern among
    solid shapes

4
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5
Data collection
  • Before collecting data, clean the glass plate and
    all dishes to be certain that scent is not a
    factor
  • Return the shape grid and empty dishes to the
    original location rearrange position of syrup
    filled dish
  • Count the bees that land on each shape for 5
    minutes
  • Have students repeat the experiment 3 for each
    shape they want to test

6
Reporting findings
  • Plot results for each trial as a histogram
  • Ask students what the results suggest about their
    hypothesis
  • Encourage students to speculate about why honey
    bees do not need shape vision that equals human
    acuity. How do honey bees compensate?

7
Conclusions
  • Bees cannot distinguish between similar-sized
    shapes if they are all solid or all made of
    broken lines
  • Bees can distinguish between solid and broken
    patterns
  • Bees have less visual acuity than humans for
    recognizing shapes, but they exceed human acuity
    in detecting motion, polarized light and
    ultraviolet light
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