Food Webs
Trophic Levels
Ecosystem Interactions
Interaction Examples
100

Almost all of the energy in a food web comes from:

The Sun (would also count "Producers")

100

True or False: The food web shows how energy flows through an ecosystem through feeding relationships

True

100

When an organism eats another organism it is called:

Predation

100

A wolf eating an elk is an example of:

Predation

200

An organism that eats both plants and animals is called:

An Omnivore

200

When an organism eats another organism, it is to obtain this:

Energy

200

A symbiotic relationship where two organisms help each other is called:

Mutualism

200

Two trees trying to grow above each other to reach the sunlight is an example of:

Competition

300

When an organism eats another organism for energy it is called

A Consumer

300

When a change in the top predator has a cascading affect where it changes the entire food web below it, it is called:

A Trophic Cascade

300

When two organisms are both trying to obtain the same food, water, territory, or other resource it is called:

Competition

300

A flea living on a cat and causing an infection is an example of:

Parasitism

400

When an organism makes its own food, usually through energy from the sun, it is called:

A Producer

400

Organisms that eat primary consumers are called:

Secondary Consumers

400

A symbiotic relationship where one organism lives in or on another organism and harms it is called:

Parasitism

400

Some bacteria inside our digestive system helps us digest food. The bacteria gets an environment to live in and we have an improved digestive system. This is an example of:

Mutualism

500

An organism that breaks down other organisms and returns their nutrients to the soil are called:

Decomposers

500

These are the levels of the food chain

Trophic Levels

500

A symbiotic relationship where one organism benefits and the other isn't affected is called:

Commensalism

500

The remora fish hitch rides on sharks. The sharks are not affected. This is an example of:

Commensalism