Ecosystem Dynamics Quiz

First and Last Name

What period do you have science?

• 1st period
• 2nd period
• 3rd period
• 4th period
• 5th period

When one part of an ecosystem changes many other parts are ______________.

• also affected
• not affected

Wolves helped control the deer and elk population because they are

• Producers
• Primary consumers
• Apex predators

Look the graph below: As Field Mice population decrease (go down) what happens to the Hawk population?

• Hawk population also decreases
• Hawk population increases
• Hawk population stays the same

Look the graph below: During most of the graph the Field Mice population is much greater than the population of Hawks.

• The ecosystem can support more hawks than field mice
• The ecosystem can support more field mice than hawks
• There are always more apex predators than primary consumers

If two species of hawks were competing for prey in the same ecosystem what might happen?

• The population of prey animals would go up
• Some of the hawks might not get enough food and the prey population may go down
• There would be prey for everyone so the population of hawks would increase

Why would Producers like grass be hurt by a disruption that removed apex predators?

• Because predators eat grass and there will be more grass.
• Because animals that eat grass will increase and eat more grass
• Because grass holds soil in place and erosion will directly hurt predators

A non-native plant or animal species that has moved from one place to another.

• Native Species
• Invasive Species
• Consumers

Which of the following is species diversity?

• Measurement of variation within living systems
• A change or event in an ecosystem
• The number and abundance of different species that occupy a location