remember… natural selection is the theory of evolution that states… “organisms best suited for...
TRANSCRIPT
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Remember…Natural Selection is the theory of evolution that states…
“Organisms best suited for the environment are more likely to survive and reproduce.”
What makes an organism “best suited” for their environment?
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ADAPTATIONS
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TRAITS
• WHAT IS A TRAIT?
• WHAT ARE SOME TRAITS HUMANS HAVE?
. . . a characteristic
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WHAT TRAITS HELP THIS GIRAFFE
SURVIVE?
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What do animals NEED to survive??
• FOOD
• WATER
• OXYGEN
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What does a SPECIES need to survive?
• need to reproduce
• need to avoid being eaten
• need to care for and protect their young
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What are ADAPTATIONS?
•traits that help organisms meet
their basic needs & survive in their surroundings
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What adaptations does a SPIDER have to help him meet his needs?
Camouflage coloring, long skinny legs, able to spin a web, and sticky feet.
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What are some adaptations a WOODPECKER
has?
•Long, sturdy beak•Sharp claws•Sticky tongue•Tail•Builds a nest
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What are some adaptations a PENGUIN has?
Fur, Webbed feet, sturdy beak, able to swim, holding breath, blubber, and coloring.
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There are two TYPES of adaptations…
• Affects the way an organism looks (body parts) or the way it is colored.
• Inherited, instinctive traits an organism does to survive.
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“I do a dance to tell my friends where to find the nectar-rich
flowers.”
What are examples of Behavioral Adaptations?
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What is this scorpion doing?
I keep my kids with me so no other animals will eat them!
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What am I doing to protect
myself from enemies?
How do I survive the cold winters in the US and
Canada?
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The Ability to Learnis a behavioral adaptation, too . . .
• Your ability to learn is an inherited behavior… your parents passed it on to you.
• What you actually learn is not inherited.
Example: Dogs have the behavioral adaptation of having “the ability to learn new tricks”.
But a dog sitting & rolling over when asked is learned, not inherited. So, they cannot pass it on to their puppies.
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What structural adaptations does this KANGAROO
have?
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What structural adaptations do BEAVERS have?
•Webbed feet•Flat tail•Large teeth
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What structural adaptations do OPOSSUMS have?
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Colors are structural adaptations, too…
• Colors can:– Scare off enemies– Camouflage animals– Warn a predator that its poisonous
THREE TYPES:• PROTECTIVE Coloration
• WARNING Coloration
• MIMICRY
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Animals with PROTECTIVE Coloration
Can you spot us?
Camouflaging/ blending into the environment to protect itself.
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Animals with WARNING Coloration
I’M WARNING YOU! I DON’T TASTE GOOD!
Bright coloring used to warn predators of being poisonous.
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Animals that use MIMICRY
What is mimicry?
Am I a butterfly or an owl?
. . . imitating another organism
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Which snake is the venomous Eastern Coral snake?
WHY AM I SO
CLEVER?
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Quick Review
• What are adaptations?• What is the difference between structural &
behavioral adaptations?• What is mimicry?• What is warning coloration?• How do animals that use warning
coloration differ from animals that
use mimicry?