Biology Principles of Ecology

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

• heterotroph
• consumer
• detritivore
• autotroph

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

• carbohydrates
• sunlight
• water
• carbon

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NGSS.MS-LS1-6

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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Autotrophs make up the _______ level in all ecosystems.

• First
• Second
• Third
• Fourth

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NGSS.MS-LS1-6

Which symbiosis relationship is this?

• parasitism 
• mutualism
• commensalism
• nonalism 

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NGSS.MS-LS2-2

Symbiotic relationship in which both organisms benefit:  

• competition
• Mutualism
• nitrogen fixation
• energy pyramid

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NGSS.MS-LS2-2

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

• mutualism
• commensalism
• parasitism
• niche

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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NGSS.MS-LS2-2

NGSS.MS-LS2-3

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

• Carnivore
• Herbivore
• Producer
• Autotroph

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

• Producer
• Autotroph
• Consumer
• Insect

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NGSS.MS-LS2-3