Life Science Quiz

How do plants get energy?

• by absorbing mineral nutrients from soil

• by eating other organisms

• through a process called photosynthesis

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What is the original source of energy for organisms in a food chain?

• sunlight

• plants

• animals

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What are three main things that plants need to grow?

• sunlight, water, soil

• sunlight, air, water

• sunlight, air, soil

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Which is the BEST definition of a food chain?

• a model of consumers providing energy to producers

• a method for growing plants without soil

• a path by which energy flows from one living thing to another

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What does a food web show?

• descriptions of how different animals of the same type are related in an environment

• pictures of the different populations of plants and animals in an environment

• the different paths that energy follows as it moves through an environment

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What do decomposers do?

• produce food through photosynthesis

• break down dead organisms or the wastes of living things

• hunt other animals for food

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What is an ecosystem?

• all the living and nonliving things that interact in an area

• all of the physical characteristics of an area

• all the living things that interact in an area

Which of the following BEST describes an invasive species?

• an organism that belongs in a certain place and grows to the point that it harms the environment

• an organism that does not belong in a certain place and harms the environment

• a species that helps native species meet their needs

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Which of the following are invasive species found in the United States?

• prairie grass and buffalo

• grasshoppers and pine trees

• kudzu and red imported fire ants

How do plants and animals interact in the carbon dioxide-oxygen cycle?

• Plants and animals give off oxygen and carbon dioxide when they decompose

• Plants take in carbon dioxide and give off oxygen

• Animals breathe in oxygen and give off carbon dioxide.

• Both B and C

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