Who is this guy? Why are we talking about him today?

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Who is this guy? Why are we talking about him
today?
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Adaptation and SurvivalWhat does this have to do
with our DNA?

• Charles Darwin- a scientist that proposed the
  theory of Survival of the Fittest
• - This is the idea that individuals with more
  successful traits would be more likely to
  reproduce and pass those traits to their offspring

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Plant and Animal Survival

• For animals, survival means finding food,
  escaping predators, and adjusting to
  environmental changes
• For plants, survival means getting enough water,
  nutrients, and sunlight
• SOME ORGANISMS ARE BETTER EQUIPPED FOR SURVIVAL
  BECAUSE THEY HAVE TRAITS THAT IMPROVE AN
  ORGANISMS CHANCE OF SURVIVAL
• This is called their adaptations

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How do adaptations help an organism?

• It makes an organism more
• FIT
• This characteristic can then be passed on to its
  OFFSPRING and then the offspring will be better
• FIT for their environment
• and now can have more OFFSPRING with the
  same characteristics
• BUT THOSE THAT ARE NOT FIT
• ? DIE AND WONT HAVE OFFSPRING
• This is called NATURAL SELECTION

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Prey Adaptations

• How do organisms avoid being killed by such
  effective predators?
• DEFENSE STRATEGIES
• Mimicry
• - when one organism imitates another organism
  for an advantage
• Pterophylla camellifolia
• Katydid

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• 2. Protective Covering
• - armor that protects the organism
• Pangolins

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• 3. Camouflage
• to blend in with surroundings
• Paradoxophyla palmata, a narrow-headed frog
  native to Madagascar. The frog's brown and yellow
  coloring, as well as its rough texture, allow it
  to blend in with the mud and tree trunks in its
  environment

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• 4. Warning Color
• used to warn predators not to eat it
• Mantellas
• By having the bright colors of the toxic species,
  the frogs are avoided by predators

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Predator Adaptations
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Through the process of natural selection, animals
and plants have evolved on Earth

• What does evolved (EVOLUTION) mean?
• - it means to change over time
• There is a difference between
• variation vs. evolutionary change
• Ex Giraffes long neck
• Evolution begins with variation
• Means that sometimes, by
• accident an animal is born that is
• somehow different from the others
• of its species and this trait allowed the
• animal to be better fit to its environment

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• Since the trait made the animal more fit it
  will have more offsprings ? meaning their genes
  will be passed on and stay within the population
• The others that do not have that trait, will most
  likely not survive ? no or fewer offspring