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Energy through an Ecosystem - Consumers

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Energy through an Ecosystem - Consumers Answer Key

1. 
What is another term for those organisms that are considered consumers in an ecosystem?
  1. producers
  2. autotrophs
  3. decomposers
  4. heterotrophs
2. 
Which organism occupies the top consumer position?
Food Web Without Text Labels
  1. mushrooms
  2. hawk
  3. mouse
  4. snake
3. 
What type of consumer relies on dead carcasses for its energy requirements?
  1. herbivore
  2. scavenger
  3. decomposer
  4. omnivore
4. 
Which type of consumer is the organism shown in the picture?
Pictograph - Snake
  1. scavenger
  2. carnivore
  3. herbivore
  4. detritivore
5. 
The word "autotroph" comes from the Greek words meaning "self" and "food." Based upon this information, what does the term "heterotroph" mean?
  1. "other feeder"
  2. "food destroyer"
  3. "energy maker"
  4. "self energy"
6. 
Earthworms feed on rotting materials on the forest floor, making them detritivores of an ecosystem.
7. 
Consumers that get energy from both plant and animal sources are called omnivores.
8. 
No matter how many steps a food chain contains, how many organisms there are, or where the food chain is located, every food chain will always end with
  1. predators.
  2. detritivores.
  3. carnivores.
  4. decomposers.
9. 
Which consumer gets the most benefit from the energy of the Sun?
Food Web Without Text Labels
  1. mouse
  2. mushroom
  3. snake
  4. hawk
10. 
Carnivores kill and eat other animals. However, hunting and chasing prey takes a lot of energy. If carnivores are using so much energy to find and capture their food, it hardly seems worth all the effort. What is the advantage of eating meat instead of plants?
  • While carnivores do expend a lot of energy on the hunt and capture of their food, meat is usually very high in nutrients and provides the carnivore with more energy than they used to capture it in the first place. Also, meat is much easier to digest than plant matter, so obtaining the energy from it is more easily accomplished.

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