Nutritional Relationships
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Transcript of Nutritional Relationships
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Nutritional RelationshipsNutritional Relationships
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NicheNiche
All organism have their niche in an All organism have their niche in an ecosystem.ecosystem.
Niche:Niche:– The roll a species plays in the environmentThe roll a species plays in the environment
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AutotrophsAutotrophs
Auto=self Troph=energyAuto=self Troph=energy
Definition: Make their own Definition: Make their own energyenergy
Also known as ProducersAlso known as Producers
Create energy through Create energy through photosynthesis (using photosynthesis (using light) or through light) or through chemosynthesis (using chemosynthesis (using chemicals)chemicals)
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HeterotrophHeterotroph
Hetero=different Troph=energyHetero=different Troph=energy
Definition: gets energy from somewhere elseDefinition: gets energy from somewhere else
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Types of heterotrophsTypes of heterotrophs
DecomposersDecomposers– Definition: obtain Definition: obtain
energy by feeding on energy by feeding on decaying organismsdecaying organisms
– Mushrooms, bacteriaMushrooms, bacteria– Saprophytes: non-Saprophytes: non-
green plants living off green plants living off of dead material.of dead material.
– Useful because they Useful because they recycle materials in recycle materials in ecosystems.ecosystems.
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Heterotroph cont.Heterotroph cont.
Herbivores: only eat Herbivores: only eat plantsplants
Carnivores: only eat Carnivores: only eat meatmeat
Omnivores: eat both Omnivores: eat both plants and meatplants and meat
Scavengers: eat meat Scavengers: eat meat theat has already theat has already been killed (aka been killed (aka detrivores)detrivores)
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Food ChainFood Chain
Shows how energy moves through an Shows how energy moves through an ecosystem by showing who eats who.ecosystem by showing who eats who.
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Trophic pyramidTrophic pyramid
Shows how energy moves through a food chainShows how energy moves through a food chain
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Energy Pyramid cont.Energy Pyramid cont.
10% of the energy moves from the level below to 10% of the energy moves from the level below to the level abovethe level above
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Biomass PyramidBiomass Pyramid
Biomass: Mass of living tissue in each levelBiomass: Mass of living tissue in each level
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Relationships between Relationships between organismsorganisms
Parasitism: One organism benefits and the other Parasitism: One organism benefits and the other is hurt ex: a tic or leachis hurt ex: a tic or leach
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Relationships between Relationships between organismsorganisms
Mutualism: Both Mutualism: Both organisms benefitorganisms benefit
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Relationships between Relationships between organismsorganisms
Commensalism: One organism benefits and the Commensalism: One organism benefits and the other is not affected at all.other is not affected at all.
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Predator vs. PreyPredator vs. Prey
The Predator is the organism that huntsThe Predator is the organism that hunts
The prey is the organism that is being huntedThe prey is the organism that is being hunted