Adaptation & Variation
Chapter 7
Extinct = Species that have completely disappeared from Earth
Adaptation
= Variation that helps the organism survive + reproduce in an environment
Behavioural adaptation
- Organism’s action that helps it survive and reproduce
- Emperor penguins huddle in the winter to keep the eggs warm
Structural adaptation
- Specific part/features of the organism’s body
- Needle-sharp talons + Good vision (Owl)
- Camouflage = Helps hide
- Mimicry
- Batesian Mimicry
- Harmless species look like harmful species
(Colouration/structure)
- Predators will avoid both
- Mullerian Mimicry
- Two different species (both harmful in own ways) develop similar
structures/colours
- Mutual benefit
- Predators will avoid both
Physiological adaptation
- Biochemical process (inside the organism)
- Cheetahs have flexible spine and its hind legs move in front of the front legs
to push for more speed
- Hibernation
- Survive during harsh climates
- Reduces their metabolism (save energy)
Developing an adaptation
Chapter 7
Extinct = Species that have completely disappeared from Earth
Adaptation
= Variation that helps the organism survive + reproduce in an environment
Behavioural adaptation
- Organism’s action that helps it survive and reproduce
- Emperor penguins huddle in the winter to keep the eggs warm
Structural adaptation
- Specific part/features of the organism’s body
- Needle-sharp talons + Good vision (Owl)
- Camouflage = Helps hide
- Mimicry
- Batesian Mimicry
- Harmless species look like harmful species
(Colouration/structure)
- Predators will avoid both
- Mullerian Mimicry
- Two different species (both harmful in own ways) develop similar
structures/colours
- Mutual benefit
- Predators will avoid both
Physiological adaptation
- Biochemical process (inside the organism)
- Cheetahs have flexible spine and its hind legs move in front of the front legs
to push for more speed
- Hibernation
- Survive during harsh climates
- Reduces their metabolism (save energy)
Developing an adaptation
