Unit 11 Ecosystems

Members of a species in a defined area

• Ecosystem
• community
• biodiversity
• population

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Consumer that eats plants

• heterotroph
• herbivore
• producer
• community

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

• foodweb
• consumer
• food chain
• omnivore

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Organisms that relies on other organisms for food; consumer

• herbivore
• decomposer
• heterotroph
• species

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All the organisms in a particular location, including their nonliving environment

• ecosystem
• carnivore
• niche
• population

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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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Which of the following leads to a decrease in biodiversity?

• protection of ecosystems
• pollution control
• selective cutting
• introduction of exotic or invasive species

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A bee receives nectar from a flower and carries the pollen to other flowers:

• predation

• parasitism

• mutualism

• commensalism

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Mistletoe grows and spreads on trees, taking their nutrients:

• predation

• parasitism

• mutualism

• commensalism

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