Food Chains Food Webs Food Pyramids Review

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What is a food chain?

Back

A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, illustrating who eats whom.

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What is a food web?

Back

A food web is a complex network of interconnected food chains that illustrates how various organisms in an ecosystem are related through feeding relationships.

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What is a food pyramid?

Back

A food pyramid is a graphical representation that shows the energy levels in an ecosystem, with producers at the base and top predators at the apex.

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Who are producers in a food chain?

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Producers are organisms, typically plants, that create their own food through photosynthesis and form the base of the food chain.

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What are primary consumers?

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Primary consumers are herbivores that eat producers and are the second level in a food chain.

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What are secondary consumers?

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Secondary consumers are carnivores that eat primary consumers and are the third level in a food chain.

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What are top predators?

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Top predators are organisms at the top of the food chain that have no natural enemies and are often carnivores.

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What role do decomposers play in an ecosystem?

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Decomposers break down dead organic matter, returning nutrients to the soil and completing the nutrient cycle.

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How does energy transfer in a food chain?

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Energy transfer in a food chain is inefficient; only about 10% of the energy is passed from one trophic level to the next.

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What is the significance of biodiversity in food webs?

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Biodiversity increases the resilience of food webs, allowing ecosystems to better withstand changes and disturbances.