Food Chains
Food Webs
Real World Examples
Energy Pyramids
Miscellaneous
100
This type of organism is the start of every food chain.
What is a producer?
100
The frog eats these organisms.
What are the grasshopper, butterfly, dragonfly, and fruit fly?
100
This is a food web of Yellowstone National Park. Which organism is the apex predator?
Wolves
100
This percent of energy is passed from one trophic level to the next.
What is 10%
100
These are the products of photosynthesis.
What are oxygen and glucose?
200
This organism would play the role of the secondary consumer in this food chain.
What is the frog?
200
List one food chain from this food web.
Answers will vary.
200
This type of organism can be connected to all other organisms in the food web.
What is a decomposer?
200
As you go up the pyramid, the population of organisms gets smaller because of this.
What is there is not enough available energy?
200
The arrows point in this direction in a food web or chain.
What is toward the organism doing the eating/in the direction of where the energy flows?
300
This arrows represent this in a food chain.
What is the flow/direction of energy?
300
This is the difference between a food chain and a food web.
What is food chains are simpler representations of feeding relationships. Food webs are multiple food chains put together and show more feeding relationships.
300
Hunters killed off many of the wolves in Yellowstone. How would that impact the deer population?
The deer population would increase because the wolves are their predators.
300
The buffalo grass starts with 5,000kj of energy. This means that the coyote would end up with this much energy. 
What is 50kj of energy?
300
This type of effect is when the size of a population is impacted through the changes of another population.
What is an indirect effect?
400
This would happen initially if the snake population were to suddenly decrease. (2 part answer) 
What is the frog population would increase due to less predators and the eagle population would decrease due to a lack of food?
400
The bird plays these roles in this food web.
What are the primary and secondary consumer?
400
How could a population of predators impact the population of producers in an ecosystem if they do not eat them?
Predators eat the organisms that eat the producers. A change in a predator population would directly affect the prey population that eats the producers. Therefore the producer population would indirectly change.
400
Organisms located at this point in the pyramid need many food sources because each source gives little energy.
What is at the top of the pyramid?
400
This type of organism has no natural predators in an ecosystem.
What is an invasive species?
500
This type of organism has the most energy in a food chain.
What is the producers?
500
This would happen to the mice population if all owls were killed. This would then happen to the grain as a result.
The mice population would grow out of control because they have no predators. The grain population would decrease because there would be too many mice eating grain.
500
Wolves do not eat beavers. What impact would killing the wolves have on the beavers?
With no wolves, the coyote population would increase. Coyotes eat beavers so the beaver population would go down.
500
Most of the energy in organisms is used or lost as this.
What is heat?
500
This was the moral of the story in "There's a Hair in My Dirt".
What is humans are a misunderstanding with their relationship with nature. Additionally, decomposers break down dead organisms and are essential to the health of the ecosystem?