Food Chains, Food Webs, Energy Pyramids

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Food Chains, Food Webs, Energy Pyramids
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DQ 1 2/3/15 use page 484

• Draw a consumer and label
• Draw a producer and label
• Draw a herbivore and label
• Draw a carnivore and label
• Draw an omnivore and label
• Draw a decomposer and label

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Organisms

• Producers or autotrophs Organisms that make
  their own food.
• EX Plants, algae, and plankton
• Consumers or heterotrophs organisms that need
  to eat other things
• EX Dogs, horses, people

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Consumers

• Herbivores- organisms that eat only producers
  (plants).
• EX Deer, cows, rabbits
• Carnivores- organisms that eat only meat.
• EX Wolves, alligators, bats

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Organisms

• Omnivores- organisms that eat both plants and
  animals. omni means all
• Ex Humans, birds, pigs
• Decomposers- break down dead and decaying
  organisms, they put nutrients back into the soil
• EX Bacteria fungi
• Scavenger- eat dead and decaying things
• EX buzzard, maggots, ants

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Food Chain

• A diagram that represents how the energy in food
  (matter) molecules flows from one organism to the
  next.

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Food chain
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Food Web

• A complex diagram representing the many energy
  pathways in a real ecosystem. (many food chains)
• The sun plants are the main sources of energy
  in a food web.
• The arrow points from the organism to what it is
  giving energy to.
• Made up of many food chains!

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Food Web
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Food Chains and Food Webs

• Below are some examples of different food webs.
  What are they missing?

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Energy Pyramids

• Energy Pyramids show the amount of energy
  available at each level. The base level consists
  of primary producers. Animals that eat producers
  are called primary consumers.

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Energy Pyramid

• What is always at the bottom layer of the
  pyramid?
• Why can the pyramid not be inverted?