Energy in Ecosystems

Where does most of the energy in an ecosystem originate?

• The Sun
• The moon
• Earth's core
• Plants

Which of these is a "producer"?

• An oak tree
• A wolf
• A squirrel
• A mushroom

Which of these does cellular respiration?

• Producers
• Consumers
• All living things
• Only bacteria

How do plants store the energy produced by photosynthesis?

• As carbohydrates (sugars & starch)
• As protein in the stem
• As lipids in the roots
• In stomata on the leaves

Which of these is always a primary consumer, and thus only eats plants?

• Herbivore
• Omnivore
• Carnivore
• Producer

Which of these can be a primary or a secondary consumer, as it eats both plants & animals?

• Herbivore
• Omnivore
• Carnivore
• Producer

Which of these is usually a predator, because they do not eat plants.

• Herbivore
• Omnivore
• Carnivore
• Producer

What does a scavenger eat?

• Any prey that it can catch.
• Fresh plants only.
• Things that are already dead.
• Only pepperoni pizza

Which of these is a decomposer?

• Bacteria
• Worms
• Fungus
• All of these

All steps in a food chain always involve a loss of...

• light
• mass
• time
• energy