Are these happy face spiders all the same species? Adaptation.
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Transcript of Are these happy face spiders all the same species? Adaptation.
![Page 1: Are these happy face spiders all the same species? Adaptation.](https://reader031.fdocuments.net/reader031/viewer/2022032708/56649e7e5503460f94b8112d/html5/thumbnails/1.jpg)
Are these happy face spiders all the same species?
Adaptation
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Yes, they are all members of the same species. They freely mate and have similar reproductive behaviours. They live in Hawaii.
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Meet the Liger!
Meet Hobbs the ‘Liger’- cross between a male lion and a female tiger
- sterile male- challenges geographic isolation because interbreeding between species occurs, BUT ligers are typically sterile therefore this is ‘unsuccessful breeding’
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Adaptations
• Adaptations are inherited traits that improve the chances of survival and reproduction of organisms
• 3 types1. Physical Adaptations
2. Behavioural Adaptations
3. Physiological Adaptations
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Physical Adaptations• Structural/anatomical
adaptations• In birds
• Wings• Feathers
• Opposable thumb in Panda Bears
• Polar bears - Black skin and hollow hairs
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Behavioral Adaptations1. Courtship- mating ritual2. Migration- geese fly south for winter3. Nocturnalism- active during the night4. Metabolism- how fast an individual
uses food for energy5. Hibernation – sleeping through the
winter6. Estivation - slowing of metabolism in
some animals during a hot or dry period
Lyre bird: http://www.youtube.com/watch?v=VjE0Kdfos4Y&safety_mode=true&persist_safety_mode=1&safe=activeBird of paradise: http://www.youtube.com/watch?v=HyvxlUpEjgI&safety_mode=true&safe=active&persist_safety_mode=1
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Physiological Adaptations
• Pheromones– chemicals secreted by organisms to
attract or repel other organisms• Examples: Sexual attractants or
alarms• Poison glands (frogs)
• Enzymes - control bodily functions• Venom by snakes• Toxins produced by plants &
animals (skunk, sea anemones)