Food Chain & Food Web Practice

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What is a food chain?

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A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers.

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What is a food web?

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A food web is a complex network of interconnected food chains in an ecosystem, illustrating how different organisms are related through feeding relationships.

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What role do producers play in a food chain?

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Producers, such as plants, convert sunlight into energy through photosynthesis and form the base of the food chain.

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NGSS.MS-LS1-6

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What is a primary consumer?

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A primary consumer is an organism that eats producers; they are typically herbivores.

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NGSS.MS-LS2-2

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What is a secondary consumer?

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A secondary consumer is an organism that eats primary consumers; they can be carnivores or omnivores.

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NGSS.MS-LS2-2

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What is a tertiary consumer?

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A tertiary consumer is an organism that eats secondary consumers; they are often top predators in the food chain.

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NGSS.MS-LS2-3

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What is the ultimate source of energy for most ecosystems?

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The ultimate source of energy for most ecosystems is the sun.

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NGSS.MS-LS1-6

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What is an omnivore?

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An omnivore is an organism that eats both plants and animals.

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What is the significance of decomposers in a food web?

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Decomposers break down dead organic matter, returning nutrients to the soil and making them available for producers.

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NGSS.MS-LS2-3

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How does energy transfer through a food chain?

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

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NGSS.MS-LS2-3