Ecology Biology Review

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

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Consumer that eats plants

• heterotroph
• herbivore
• producer
• community

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The rabbit in this food web would be considered a:

• Decomposer
• Producer
• Secondary Consumer
• Primary Consumer

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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

The amount of energy that usually transfers from one trophic level to the next...

• 10%
• 20%
• 80%
• 50%

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The nonliving aspects of an ecosystem.

• Abiotic factors
• Biotic factors

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As you move upward, from level to level, in an energy pyramid, energy _____.

• increases
• decreases
• stays the same
• increases exponentially

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An ant lives on an acacia tree- the ant protects the tree and the tree feeds the ant. What kind of relationship is this?

• Mutualism

• Commensalism

• Parasitism

• Predation

Which of the following are the ecosystem’s main decomposers?

• Scavengers

• Fungi and Bacteria

• Birds

• Lions and Bears

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The Insect population would most likely DECREASE if there were…

• An increase in decomposers

• An increase in the amount of grass

• A decrease in Mice and Shrews

• A decrease in the amount of available sunlight

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