1. Standard VI-1, part 3- Adaptations
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Standard VI-1, part 3- Adaptations

2. Forerunner of Evolution
Jean-Baptiste Lamarck- Theory of “Inheritance of Acquired Traits”
Believed organisms changed behavior as a result of an environmental change
As a result, physical changes followed with time which could then be inherited
Incorrect, but on the right track!

3. Evolution
Changes in an organism over time known to occur due to fossils
Adaptation- Evolution of a structural, internal or behavioral feature to better suit the organism for survival
Results from a change in the environment
Theory of Natural Selection
Survival of the fittest- organisms with the best genes survive and pass them on
Causes a change in the gene pool
Unfit genes die out or are bred out

4. Evolution
Divergent Evolution- Development of more than one species from a common ancestor
Ex: All dog breeds have been selectively bred from the wolf
Convergent Evolution- Development of a common characteristic by more than one unrelated species due to living in similar environments
Ex: Arctic mammals all have white winter coats

5. Structural Adaptations
Mimicry- Copying of the appearance of other organisms for protection or other advantages
Protective resemblance- Normally resembles plant structures
Camouflage- Body color blends in with surroundings
Spots and stripes break up body pattern
Warning Coloration- Bright coloration to warn of danger
Mechanical Defenses- Physical covering that allows for defending from predators or to aid in predation
Ex: Claws, sharp teeth, quills, shells, etc.

6. Structural Adaptations
Mimicry/Warning Coloration
Protective Resemblance
Camouflage

7. Adaptations Charles Darwin Father of evolution
Developed theory of natural selection
Traveled on the H.M.S. Beagle to the Galapogos Islands
Studied finches and beak size and shape
Beaks of birds are adaptations for food type

8. Bird Beak Adaptations

9. Bird Feet Adaptations

10. Bird Wing Adaptations
Penguin wing adapted for swimming

11. Behavioral Adaptations
Migration- Movement of an animal from one place to another
Common in birds and grazing mammals
Brought on by climate change
Hibernation- Period of dormancy during certain time-periods
Common in reptiles and mammals of cold climates

12. Behavioral Adaptations

13. Behavioral Adaptations

14. Internal Adaptations Chemical defenses
Development of mucus glands- secrete mucus for protection
Toxin/Venom development