Flow of Energy in an Ecosystem

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show the direction the energy is flowing between organisms.

• They represent how water is transferred within a habitat.

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What is indicated by the diagram?

• Food web
• Food chain
• Food map
• Food menu

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Autotrophs are organisms that produce their own food. Which do scientist classify as autotrophs?

• Chordates
• Fungi
• Plants
• Molds

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In the food web above, what organism is a tertiary consumer?

• Fox

• Frog

• Vole

• Grass

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What term describes the position of an organism on the food chain?

• food web

• energy levels

• trophic levels

• matter cycle

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In this food chain, what will happen if the frogs become extinct?

• The snakes will increase.
• The grasshoppers will decrease.
• The eagles will remain the same.
• The grasshoppers will increase.

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In the energy pyramid here, which organisms have the most energy available?

• Producers
• Carnivores
• Herbivores
• Top Predator

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In the energy pyramid below, which organism has the least amount of energy available?

• Producers
• Herbivores
• Carnivores
• Top Predator

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NGSS.MS-LS2-3

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

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The relationship between ALL the organisms in a community showing who eats whom is called a ___________________________.

• Food Web
• Food Chain
• Abiotic Factors
• Biotic Factors

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