Food Webs & Changes to the Environment

What do the arrows in the food chain indicate about the flow of energy in an ecosystem?

• Energy is continuously recycled by the organisms in an ecosystem.

• Energy flows in one direction in an ecosystem, from producers to consumers.

• More of the available energy in an ecosystem is given to large animals than to small animals.

• Organisms at the end of the food chain receive more energy than those at the beginning.

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How would the removal of earthworms from the food chain affect the other organisms?

• The number of bass will increase.

• The number of crayfish will decrease.

• The crayfish will get their energy directly from the sun.

• The number of bass and ospreys (bird) will increase.

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The picture shows the energy flow through a meadow community. Which of the following would most likely occur to the populations within the community of organisms immediately after a wildfire burns the environment?

• Hawks would increase and foxes would increase.

• Hawks would decrease and foxes would increase.

• Meadow plants would increase and rabbits would decrease.

• Meadow plants would decrease and rabbits would decrease.

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All of the living and non-living things in a given area

• Abiotic
• Biotic
• Ecological Succession
• Ecosystem

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Describes the non-living things in an ecosystem

• Biotic
• Abiotic
• Biodiversity
• Ecosystem

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An organism that derives its energy from the Sun and is often a food source for other living organisms 

• Prey
• Parasite 
• Consumer
• Producer

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What is a herbivore?

• an animal that gets energy from eating other animals
• an organism that gets energy from eating only plants
• an animal that gets energy by eating both plants and other animals
• an animal that eats only herbs

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An organism that gets energy from eating other organisms is a ______________.

• producer
• consumer
• decomposer
• prey

An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.

• producer
• consumer
• decomposer
• autotroph

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What is a carnivore?

• an animal that gets energy by eating other animals
• An animal that gets energy by eating only plants
• an animal that gets energy by eating both plants and animals
• an animal that makes its own energy through photosynthesis