 Anchor: BIO.B.4.2 Describe interactions & relationships in an ecosystem ◦ BIO.4.2.2: Describe biotic interactions in an ecosystem.

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Presentation transcript:

 Anchor: BIO.B.4.2 Describe interactions & relationships in an ecosystem ◦ BIO.4.2.2: Describe biotic interactions in an ecosystem

 Organisms interact with each other when share same habitat or niche  Types of interactions: ◦ Competition ◦ Predator/prey ◦ Symbiosis: two organisms in close, constant contact  Commensalism  Mutualism  Parasitism

 Community Interactions ◦ Competition: organisms attempt to use a resource at the same time in the same place  Resource could be mate, food, territory, etc.

 Predation: one organism (predator) captures and kills another organism (prey) ◦ Ex: lion hunts and kills wildebeest dragons-hunt-buffalo.htm

 Symbiosis: relationship in which two species live closely together ◦ Mutualism: both species benefit from the relationship  Ex: Flowers depend on bees to pollinate them  Flowers  reproduce  Bees  get food

 Symbiosis ◦ Mutualism:  Ex: Birds on back of buffalo  Birds  food  Buffalo  get cleaned/protection from parasites

 Symbiosis ◦ Commensalism: one species benefits; one is unaffected  Ex: Barnacles attaching to whale  Barnacle  filters water to get food  Whale  unaffected

 Symbiosis ◦ Commensalism:  Ex: Orchids growing up trees in Rain Forest  Orchids  more sunlight  Tree  unaffected

 Symbiosis ◦ Parasitism: one species (parasite) feeds on but doesn’t kill another (host)  Ex: tick (parasite) on a deer (host)  Ex: tapeworms (parasite) in animals intestines (host)