Ecosystems Lesson 5 & 6: Food Webs & Organism Interactions

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What is a food web?

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A food web is a complex network of feeding relationships among various organisms in an ecosystem, showing how energy and nutrients flow through different trophic levels.

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What is the role of producers in an ecosystem?

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Producers are organisms, such as plants and algae, that create their own food through photosynthesis and serve as the primary source of energy for consumers.

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What are consumers?

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Consumers are organisms that cannot produce their own food and rely on consuming other organisms for energy. They can be herbivores, carnivores, or omnivores.

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What are decomposers?

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Decomposers are organisms, such as fungi and bacteria, that break down dead organic matter, recycling nutrients back into the ecosystem.

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What is commensalism?

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Commensalism is a type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed.

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What is mutualism?

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Mutualism is a symbiotic relationship where both organisms benefit from the interaction.

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What is parasitism?

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Parasitism is a relationship where one organism benefits at the expense of another, often harming the host.

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What is a trophic level?

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A trophic level is a position in a food chain or food web, representing the flow of energy from producers to various levels of consumers.

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What is an example of a primary consumer?

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An example of a primary consumer is a herbivore, such as a rabbit, that eats plants.

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What is an example of a secondary consumer?

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An example of a secondary consumer is a carnivore, such as a snake, that eats primary consumers like rabbits.