Food Webs
What does a food web show?
Multiple paths of energy within an ecosystem.
What do the arrows on a food web show?
The arrows show the direction of the energy within the food chains.
A collection of different populations interacting in an area is....
Community
One organism is helped but the other is hurt.
Parasitism
In photosynthesis, plants create their own food. What is their food called?
Glucose/Sugar
Looking on your study guide, what organisms from the Tundra are primary consumers?
Snowshoe Hare, Lemming, Caribou
Why are decomposers important to the ecosystem?
They break down dead and decaying matter and return it to the soil.
All organisms of the same species that live in the same area at the same time
Population
Both organisms are benefited by the relationship
Mutualism
What is the difference between producers and consumers?
What is the Top Predator in a food web?
Apex Predator
Where does all energy begin?
The Sun!
A single type of living thing
Organism
One organism is eaten by another organism
Predation
Land that was previously a meadow filled with deer has been turned into lots for new homes. What is the limiting factor?
Space
Based on your Tundra Food Web, what organism appears to be missing?
Decomposers
What is a tertiary Consumer?
The third consumer in a food chain/web
An organism that breaks down dead organisms and puts minerals back into the soil
Decomposer
One organism is helped and the other is unaffected by the relationship
Commensalism
What would happen to the population of mice if all the snakes disappeared?
The mouse population would increase.
Based on your Tundra Food Web, who is the apex predator?
Wolf
DOUBLE JEOPARDY
What is the equation for photosynthesis?
Carbon Dioxide + Water + Sunlight = Glucose + Oxygen
An organism that feeds on dead animals or what ever other food source is available...
Scavenger
Give me an example of each relationship
Mutualism, Commensalism, Predation, Parasitism
Mutualism- Flower and Bird
Commensalism- Whale and Barnacle
Predation- Lion and Zebra
Parasitism- Flea and a Dog
The Wyoming DNR has been tracking the local gray wolf population. They noticed that the deer population and the wolf population decreased over the past few years. Why has the wolf population decreased?
The prey (deer) has decreased so there is less food for the wolves.