relationships in ecology: food chains and webs
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Relationships in Ecology: Food Chains and Webs. 8SCIENCE . Different types of consumers. REVIEW: What is a consumer? Consumer is any organism that eats other organisms for energy Herbivore Eats plants only Carnivore Eats other animals only Omnivore Eats plants and animals. Food Chains. - PowerPoint PPT PresentationTRANSCRIPT
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Relationships in Ecology: Food Chains and Webs
8SCIENCE
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Different types of consumers
• REVIEW: What is a consumer?• Consumer is any organism that eats other
organisms for energy – Herbivore• Eats plants only
– Carnivore• Eats other animals only
– Omnivore• Eats plants and animals
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Food Chains
• How energy (food) passes from one organism to another
• Usually have 3 – 4 links• Many food chains in any ecosystems
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Food Chains• First link is a producer– Gets energy from the sun
• Second link of a food chain is usually a herbivore– Eats producers
• Third link of a food chain is usually a carnivore– Animal that eats other
animals
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Food Chains continued…
• Fourth link is a top carnivore– Eats other carnivores
• When an organism dies in an ecosystem, decomposers feed on the dead organism– Returns nutrients to the
soil– Ex: bacteria and fungi
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Food Webs• Includes many
groups of food chains that overlap
• Shows how energy moves through an ecosystem