Energy Flow

1. Based on the model above, which consumers would receive the greatest amount of energy captured by the producers in their food chains?

• Beluga Whale

• Polar Bear and Arctic Hare

• Ptarmigan and Arctic Bumblebee

• Lichen

2. What is the apex predator in the energy pyramid above?

• Ptarmigan

• Polar Bear

• Lichens

• Beluga Whale

3. Which group(s) in the energy pyramid above are the producers?

• 1 and 2

• 3 and 4

• 4

• 1

4. In the energy pyramid above, which trophic level is the primary consumer?

• 1

• 2

• 3

• 4

5. Level 1 is called the ______ tropic level.

• tertiary consumer

• tertiary producer

• primary comsumer

• primary producer

6. Which trophic level in an energy pyramid has the greatest amount of energy to use?

• producers
• primary consumers
• secondary consumers
• tertiary consumers

7. If the original amount of energy in an energy pyramid is 10,000 J, what amount is left for the apex predators? (Hint: there are 5 layers on an energy pyramid with apex predators)

• 0.10 J
• 1 J
• 10 J
• 100 J

8. How much energy is transferred to the secondary consumer when the secondary consumer eats a primary consumer?

• 10%
• 20%
• 50%
• 90%

9. Where do producers get their energy?

• soil
• decomposers
• sun
• garbage

10. Organisms who produce their own food are called ______.

• heterotrophs
• herbivores
• carnivores
• autotrophs