Ecosystems

A bear is an example of a

• herbivore

• carnivore

• omnivore

A shark is an example of a

• herbivore

• carnivore

• omnivore

A worm is an example of a

• producer

• consumer

• decomposer

Which of the following organisms is a primary consumer?

• grass

• rabbit

• fox

• snake

Which of the following organisms uses photosynthesis to get the energy it needs to survive?

• grass

• rabbit

• fox

• snake

Which of the following organisms in competition with the weasel for their food source?

• grass

• rabbit

• fox

• snake

Which of the following organisms is a herbivore?

• grass

• rabbit

• fox

• snake

What would happen to the rabbit population if the fox population moved out of the area represented by the food web?

• The rabbit population would increase

• The rabbit population would decrease

• The rabbit population would neither increase nor decrease

What might happen if you remove a primary consumer from the ecosystem?

• There would be more food for secondary consumers.
• The number of primary consumers would increase.
• The number of plants would increase.
• The number of secondary consumers would increase.

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.