Food Chain vs. Food Web

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How do plants get their food?
PHOTOSYNTESIS
2nd carnivore
herbivores
1st Carnivore
What happens to the waste material after HAWK
dies?
decomposers
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Food Chains/Webs

• Food chain (glossary)
• The arrows show the direction in which FOOD
  ENERGY is moving.
• Each step in a food chain is called a
• TROPHIC LEVEL

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Food Chain

• grass ? grasshopper ? frog ? snake ? hawk

Organism Trophic Level Order of consumer Order of carnivore
Grass
Grasshopper
Frog
Snake
Hawk
producer
1st
Primary consumer
2nd
herbivore
Secondary consumer
3rd
1st
4th
3rd
2nd
4th
5th
3rd top predator
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Food Web

• Food chains that are linked by common plants and
  animals are called FOOD WEBS
• Advantage more stable can sustain loss of one
  organism
• Make a food web with these organisms
• Wolf, fox, deer, mice, grass plants,
  grasshopper, frog, snake hawk

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Food Chain animation Summary

• http//ecokids.earthday.ca/pub/eco_info/topics/fro
  gs/chain_reaction/assets/flash/chain_reaction.swf
• Fun with Food WEBS
• http//www.harcourtschool.com/activity/food/food_m
  enu.html

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Activity Construct Food Web







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Homework

• Work on Ecology Crossword
• Across 2, 4, 12
• Down 1, 2, 6 11
• (Dont forget to add this to your table of
  contents)