Unit 2 Organisms and Environment

What is a community in an ecosystem?

• A single species living in an area

• A group of different species living together and interacting

• A group of the same species living together

• A single organism

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DOK Level 2: Skill/Concept

Which of the following best describes a consumer in an ecosystem?

• An organism that produces its own food

• An organism that eats other organisms for energy

• An organism that breaks down dead material

• An organism that provides energy to others

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DOK Level 2: Skill/Concept

What is the role of decomposers in an ecosystem?

• They produce energy from sunlight

• They eat other organisms for energy

• They break down dead material and return nutrients to the soil

• They compete with other species for resources

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DOK Level 2: Skill/Concept

Which of the following is an example of a cycle in nature?

• The growth of a single plant

• The water cycle

• The movement of animals

• The change of seasons

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DOK Level 2: Skill/Concept

What does diversity refer to in an ecosystem?

• The number of plants in an area

• The variety of different species within an ecosystem

• The amount of sunlight an area receives

• The number of animals in an area

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DOK Level 2: Skill/Concept

What happens during dormancy in plants?

• Plants grow rapidly

• Plants produce flowers

• Plants are alive but not actively growing

• Plants die

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DOK Level 2: Skill/Concept

How does energy flow through an ecosystem?

• From decomposers to producers to consumers

• From consumers to producers to decomposers

• From the sun to producers to consumers to decomposers

• From producers to decomposers to consumers

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DOK Level 2: Skill/Concept

What is the main source of energy for most ecosystems?

• Water

• The sun

• Soil

• Wind

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DOK Level 2: Skill/Concept

Which of the following best describes an ecosystem?

• A single organism

• A community of living organisms interacting with each other and their physical environment

• A group of the same species living together

• A non-living environment

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DOK Level 2: Skill/Concept

What is decomposition?

• The process of producing energy from sunlight

• The process by which decomposers break down dead organisms and organic waste

• The process of growing new plants

• The process of animals eating plants

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DOK Level 2: Skill/Concept