Transcript Sun Grass Rabbit Hawk Bacteria

Food Chains
Sue Iannacci, Ridley Middle School
Food Chain
A path of food consumption
beginning with the sun.
Example:
Sun
Grass
Rabbit
Hawk
Bacteria
Tropic Levels
•
Level of consumption in a food chain.
1.
2.
3.
4.
Autotrophs or Producers
Herbivores or Primary Consumers
Carnivores or Secondary Consumers
Decomposers
Autotrophs
• or Producers make their own food
through photosynthesis.
The sun is
needed for photosynthesis.
• This is the first trophic level.
Which organism below would be an autotroph ?
•
Sun
Grass
Rabbit
Hawk
Bacteria
Herbivores
• Primary Consumers eat the plants which
are the autotrophs.
• This is the next trophic level.
Which organism below would be an Herbivore ?
Sun
Grass
Rabbit
Hawk
Bacteria
Carnivores
• Secondary Consumers
eat the primary consumers.
There can also be tertiary consumers that eat the secondary
consumers.
• This is the third trophic level.
Which organism below would be an Secondary
Consumer ?
Sun
Grass
Rabbit
Hawk
Bacteria
Decomposers
• Decomposers break down the dead plants and
animals.
• This turns them back into soil which the plants
need.
• This is the last trophic level.
Which organism below would be an Decomposer?
Sun
Grass
Rabbit
Hawk
Bacteria
Forest Food Chain
Sun
Grass
Grasshopper
Toad
Snake
Hawk
Coral Reef FoodChain
Sun
Blue-Green Alge
Surgeon Fish
Bacteria
Food Webs
• Most food chains are interconnected.
• Animals typically consume a varied diet and,
in turn, serve as food for a variety of other
creatures that prey on them.
• These interconnections create food webs.
Try creating three interactive food webs by clicking on the link below:
FOOD WEB FUN
Works Cited
• http://users.rcn.com/jkimball.ma.ultranet/Biolo
gyPages/F/FoodChains.html
• http://www.harcourtschool.com/activity/food/fo
od_menu.htm
• http://www.coralreefnetwork.com/educate/sho
ws/foodwebs/slide1.htm l