Biology Chapter 3 & 4

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph
• consumer
• detritivore
• autotroph

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What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

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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

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which symbiosis is this 

• parasitism 
• mutualism
• commensalism
• nonalism 

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symbiotic relationship in which both organisms benefit

• competition
• Mutualism
• nitrogen fixation
• energy pyramid

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A living relationship between two species in which one organism is harmed is called...

• mutualism
• commensalism
• parasitism
• niche

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What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

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The image provided is an example of a(n):

• Carnivore
• Herbivore
• Producer
• Autotroph

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The image provided is an example of a(n):

• Producer
• Autotroph
• Consumer
• Insect

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

• 10%
• 20%
• 80%
• 50%

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