Energy in Ecosystems

What energy role describes an organism that makes its own food, usually by using energy from the sun?

• consumer
• producer
• carnivore
• decomposer

These organisms break down decaying biotic wastes and then return the materials to the ecosystem.

• decomposers
• scavengers
• carnivores
• producers

In the food web above, what eats the rabbit?

• Fox

• Hawk

• Vole

• Grass

In the energy pyramid, what is the bottom level composed of?

• Producers

• First-Level Consumers

• Second-Level Consumers

• Third-Level Consumers

Which organism gets its energy by eating sea otters?

• Sea urchins
• Sea Stars
• Sharks
• Large crabs

Using the food web what would happen if the eagle became extinct?

• The frog population would decrease.

• The frog population would increase.

• The butterfly population would increase.

• The snake population would decrease.

A connection of food chains with many food energy paths in an ecosystem is a ____________

• ecosystem
• food web
• environment

What is a producer? 

• an organism that consumes other organisms
• an organism that uses the suns energy to make its own food
• an organism that breaks down other organisms 

Where does photosynthesis take place? 

• in the chloroplast of a plant cell
• in the mitochondria of a plant cell
• in the mitochondria of an animal cell
• in the chloroplast of an animal cell

What is the source of all energy? 

• producers
• sun
• consumers
• decomposers