Energy Flow Through Food Webs

In a food chain, what is transferred from one organism to another?

• carbon dioxide

• energy

• heat

• water

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Study the diagram of an energy pyramid for an environment. Which statement summarizes the relationship between energy and trophic level?

• Animals in a higher trophic level have more energy available to them.

• Animals in the lowest trophic level have the most energy available to them.

• Energy consumption equals energy production at each trophic level.

• Energy is available equally to organisms at all trophic levels.

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NGSS.MS-LS2-3

Use the diagram that shows an energy pyramid to answer the question. Which statement about the energy pyramid is true?

• The herbivores have more energy available to them than any other type of organism.

• The producers have more energy available to them than the carnivores.

• The producers have less energy available to them than the carnivores.

• The carnivores have more energy available to them than any other type of organism.

Tags

NGSS.MS-LS2-3

Use the diagram that shows a river basin food web to answer the question. Which statement about the food web is true?

• There are more consumers than producers.

• There are more producers than consumers.

• The river basin ecosystem does not contain any carnivores.

• The organisms with the most energy available are the Coyote and Red Fox.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

How does energy flow in a food web?

• From decomposers to producers to consumers.

• From producers to consumers to decomposers.

• In a circular pattern, with no clear start or end.

• From consumers to producers to decomposers.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In the food web diagram, what do the arrows represent?

• Life Cycle

• Metamorphosis

• How food is produced by organisms

• The flow of energy through an ecosystem

Tags

NGSS.MS-LS2-3

Why is it important for an ecosystem to have a variety of different food chains and not just one?

• It ensures more energy is available at each trophic level

• It prevents any single species from becoming too dominant

• It provides multiple pathways for energy flow and increases ecosystem stability

• It makes the ecosystem less complex and easier to study

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DOK Level 3: Strategic Thinking

An energy pyramid is pictured.

Which statement best explains the flow of energy as it moves through the different levels?

• Energy decreases as it is lost as heat to the environment.

• Energy increases as it is gained from the environment.

• Energy is unavailable because it is used up by the organisms at Level 1.

• Energy is transferred as it is produced by organisms in the next level.

Tags

NGSS.MS-LS2-3

Study the diagram of an energy pyramid for an environment. Which statement about the flow of energy in an environment is true?

• Energy will flow from the top carnivores to the carnivores.

• Energy will flow from the top carnivores to the herbivores.

• Energy will flow from the herbivores to the carnivores.

• Energy will flow from the carnivores to the herbivores.

Tags

NGSS.MS-LS2-3

Use the marine food web to answer the question. What would be the most likely effect on the food web if the fish population suddenly decreased significantly?

• The plankton population would decrease.

• The shark population would increase.

• The seal and pelican populations would decrease.

• The krill and squid populations would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4