Trophic levels

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

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Trophic levels are represented by 

• squares
• circles
• pyramids
• lines

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Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

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Why is a shark a carnivore.

• because it eats seaweed
• because it eats dead animals
• because it eats sand 
• because it eats other animals

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

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The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

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Organisms that create their own energy from sunlight or chemicals

• Herbivore
• Omnivore
• Autotroph
• Heterotroph 

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Why do we sometimes use a food pyramid to illustrate feeding relationships?

• To change things up a bit
• Pyramids show you need a lot more producers than consumers
• To show you need more consumers than decomposers
• Pyramids are neat

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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):

• Producer
• Autotroph
• Consumer
• Insect

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