Matter and Energy in Ecosystems Elevate Science Topic 9

What is the primary source of energy for most ecosystems?

• Wind

• The Sun

• Geothermal heat

• Hydroelectric power

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DOK Level 1: Recall

Which of the following is an example of a producer in a food chain?

• Lion

• Grass

• Mushroom

• Wolf

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DOK Level 1: Recall

What do we call an organism that eats only plants?

• Carnivore

• Omnivore

• Herbivore

• Decomposer

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DOK Level 1: Recall

In a food chain, what is the role of a decomposer?

• To produce energy from sunlight

• To eat other animals

• To break down dead organisms

• To provide oxygen

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DOK Level 1: Recall

Which of the following best describes the flow of energy in an ecosystem?

• It flows from consumers to producers

• It is recycled by decomposers

• It flows from producers to consumers to decomposers

• It remains constant at all levels

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DOK Level 2: Skill/Concept

How does human activity most commonly affect food webs?

• By introducing new species

• By increasing biodiversity

• By reducing pollution

• By altering habitats

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DOK Level 2: Skill/Concept

What happens to energy as it moves up a food chain?

• It increases

• It decreases

• It stays the same

• It is stored

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DOK Level 2: Skill/Concept

If something is biotic it is

• the way energy flows in an ecosystem

• a nonliving part of an ecosystem

• a living part of an ecosystem

• the way it affects something else in an ecosystem

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NGSS.MS-LS1-5

NGSS.MS-LS2-2

Which of the following is a consequence of a change in an ecosystem?

• Increased energy flow

• Unchanged food chains

• Altered population sizes

• Stable climate conditions

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DOK Level 2: Skill/Concept

Which shows how matter and energy flow from one organism to another?

• Food Web

• Food diagram

• Trophic Levels

• Food Chain

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NGSS.MS-LS2-3