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Food ChainsFood Chainsandand
Food WebsFood Webs
Science SOL 3.5
Created by Mrs. MillerGloucester, Virginia
What is a Food Chain?What is a Food Chain?
A food chain is the path by which energy passes from one living thing to another.
Each organism gets energy from the one at the level below
The different “levels” in a food chain are called Trophic Levels
Energy gets passed from the level below to the level above.
The most energy is found in the bottom levels, with the producers.
Trophic Levels
Level 4: Tertiary Consumer
Level 3: Secondary Consumer
Level 2: Primary Consumer
Level 1: Producers
ProducersProducers
Producers make their own food
Usually plants or algae
Use photosynthesis for energy
Producers are on the bottom of the food chain
Other ways to look at Other ways to look at consumers…consumers…
1. Primary Consumers: Herbivores (eat plants)
Secondary Consumers: Carnivores that eat herbivores
Tertiary Consumers: Carnivores that eat other carnivores
DecomposersDecomposers
Microorganisms that are able to break down large molecules into smaller parts
Decomposers return the nutrients that are in a living thing to the soil
Types of Food ChainsTypes of Food Chains
Aquatic- Water-related food chains with sea plants and animals
Terrestrial- Land-related food chains with land plants and animals
Predator & PreyPredator & Prey
Predator- An animal that captures and eats other animals
Prey- The animal that is captured and eaten
What is a Food Web?What is a Food Web?A more realistic way of
looking at the relationship of plants and animals in an environment
Several food chains linked together
A predator from one food chain may be linked to the prey of another food chain
Food WebsFood WebsHow many food chains can you How many food chains can you make from this food web?make from this food web?
Go to the following Go to the following link:link:
Food Chain GameASSIGNMENT:
On this webpage, you will be putting food chains in the correct order.
For every food chain, write down on a separate piece of paper the answers to the following questions:– 1. How many trophic levels are in this food
chain?– 2. Which organism is the producer/primary
consumer/secondary consumer?
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