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Community Interactions

Community Interactions. Competition. Organisms fight to survive. Predator/Prey. Predator hunts. Prey is being hunted. We will further investigate this idea later… . Symbiosis. organisms that interact and live closely together. Mutualism Both organisms benefit. Example

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Community Interactions

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  1. Community Interactions

  2. Competition • Organisms fight to survive

  3. Predator/Prey • Predator hunts. Prey is being hunted. • We will further investigate this idea later…

  4. Symbiosis • organisms that interact and live closely together

  5. Mutualism Both organisms benefit Example Bacteria in your intestines They get food You get the cellulose digested so you can eat plants 3 types

  6. One is harmed and one is helped Examples Tick on a dog’s ear The tick gets food (blood) The dog loses blood, gets a sore, and can get diseases Parasitism

  7. One benefits and one is neither harmed nor helped Example: Clown fish and anemones The clown fish gets protection from predators The anemone gets nothing Commensalism

  8. Guided practice • Can you think of examples of commensalism in human relationships?

  9. Assessment • Which situation best represents a mutualistic relationship? • A A tapeworm absorbing nutrients from the intestine of a dog • B An orchid being pollinated by a nectar collecting wasp • C A human losing blood to a feeding mosquito • D An armadillo rooting in the soil at the base of an oak tree

  10. Answer • B – The orchid is pollinated (and can therefore reproduce), and the wasp gets nectar for food. • All of the other answers describe parasitic relationships

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