Food Webs

Food webs model the way _______ move through an ecosystem.

• wind and water

• energy and matter

• predators and prey

• consumers and producers

What is the source of energy for photosynthesis?

• the sun

• the ocean

• Earth's crust

• Tubeworms

The relationship between a food web and a food chain is most similar to the relationship between a road map and:

• A mountain range

• A driving route

• A car

• A bridge

What is the role of producers in an ecosystem?

• to harness/use energy

• to break down dead material

• to prey on species

• to create sunlight

How do primary consumers get their energy?

• By performing photosynthesis

• By breaking down dead organisms

• By eating producers

• By eating decomposers

Wolves eat elk, and elk eat blackberries. Which species is a secondary consumer?

• Wolves

• Elk

• Blackberries

• None of the above

Consumers can be herbivores, carnivores, or omnivores.

• True

• False

A producer gets its energy by eating other animals.

• True

• False

A consumer eats either plants, other animals, or both.

• True

• False

The sun provides energy to producers who then provide energy to consumers.

• True

• False