LEQ: What is the relationship between adaptation and natural selection?

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LEQ What is the relationship between adaptation
and natural selection?

• Assignment Reading 1.1-1.3
• Focus on characteristics of life, themes of
  biology, hypotheses
• Activator..entangled bank..
• React to the following quote from Charles
  Darwins book On the Origin of Species. What are
  your views on the evolution of life?
• Key terms evolution, adaptation

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Evolution is change in living things over time.

• Change
• genetic information
• anatomy
• development

• Compare and contrast white oak (left) and red oak
  leaves (right)

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Evolution can occur through natural selection

• Natural selection
• advantageous traits
• survival
• reproductive success
• Q What environmental conditions favor the growth
  of evergreens more than deciduous trees?

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Adaptation involves changes in the traits of
species

• Top coastal live oak
• Close relative of red oaks
• Bottom southern live oak
• Close relative of white oaks
• Evergreen adapting to poorer growing conditions
• dryness
• salt
• sandy soils

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• New species can emerge when adaptive traits are
  passed on to future generations

• Q What are the characteristics of a tree?

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Adaptation racing for the sky on islands

• Prickly pear cactuses have evolved tree forms on
  the Galapagos Islands

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Adaptation racing for the sky on islands

• Cucumber plant relatives have evolved a tree form
  on Socotra

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Summary

• What is the relationship between evolution and
  natural selection?
• Speculate
• Why have so many different types of tall woody
  plants evolved?
• Why have so many different types of evergreens
  evolved?

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Summary

• How is the structure of a system (bone) related
  to how it functions?
• Reflection No organ is an island Gerard
  Karsenty. In what way or for what reason would a
  bone need to be attuned to the rest of the body?
• Closing Describe how our class could be
  considered a system.

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Purple praying mantis note the petal-like anatomy
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Orchids predators
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Spiny Flower Mantis
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