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Transcript
Relationships in the Ecosystem Interactions What are the types of relationships? 1) 2) 3) 4) Predator / Prey Competition Mimicry Symbiosis A) commensalism B) mutualism C) parasitism Predator / Prey Predator = animal that hunts another animal for food. Prey = animal that is eaten by another. Predator / Prey populations will change in response to each other’s population. Predator / Prey Competition …when 2 organisms or species have the same niche they will compete for resources. The “loser” will have to leave, get another niche or die. Mimicry Mimicry – harmless species resembles a dangerous or distasteful one Ex. One type of king snake looks very much like the poisonous coral snake. Red on black- friend of jack Red on yellow- can kill a fella Symbiosis …the relationship between different species living in close association with one another. There are 3 types of symbiotic relationships. 1) Mutualism …both organisms benefit. EX: Lichen (moss or fungus & algae), Clown fish & sea anemone Mutualism 2) Commensalism …one organism benefits, the other isn’t helped or harmed. EX: Whales & Barnacles 3) Parasitism …one organism benefits (parasite), the other is harmed (host) Parasite- organism that gets nutrients at the expense of another organism or lives on / within another. EX: tapeworms, pinworms, ticks, etc… The End