Ecology Basics

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

• carbohydrates
• sunlight
• water
• carbon

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

• Autotroph
• Producer
• Consumer
• Mutualist

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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Consumer that eats plants

• heterotroph

• herbivore

• producer

• community

The rabbit in this food web would be considered a:

• Decomposer
• Producer
• Secondary Consumer
• Primary Consumer

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The nonliving aspects of an ecosystem.

• Abiotic factors

• Biotic factors

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In this Ecological Pyramid Which type of consumer gets only 10% of the energy stored in the autotrophs?

• Herbivore

• Carnivore

• Omnivore

• Secondary Consumer

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

• Carnivore
• Herbivore
• Producer
• Autotroph

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

• 10%
• 20%
• 80%
• 50%

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symbiotic relationship in which both organisms benefit

• competition
• Mutualism
• nitrogen fixation
• energy pyramid

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