Ecology Unit 10.1 principles of ecology

Which level of organization includes all of the other levels?

• community

• ecosystem

• individual

• population

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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The shrew provides energy for the _______?

• cricket
• grasshopper
• frog
• snake

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An animal that eats other animals is a....

• carnivore
• omnivore
• herbivore
• decomposer

Series of steps in which organisms transfer energy by eating and being eaten

• foodweb
• consumer
• food chain
• omnivore

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What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

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In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

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Nitrogen fixation processes nitrogen from which of the following sources?

• lightning
• fertilizers
• dead plants
• atmosphere

What is the term for each step in the transfer of energy and matter within a biological community?

• energy path
• food web
• trophic level
• food pyramid

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symbiotic relationship in which both organisms benefit

• competition
• Mutualism
• nitrogen fixation
• energy pyramid

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