Energy Flow in the Ecosystem

In this energy pyramid, which organisms have the most energy available?

• Producers
• Carnivores
• Herbivores
• Top Predator

In an ecological pyramid, which type of organism always has the least amount of energy available?

• Producers
• Herbivores
• Carnivores
• Top Predator

How much of the energy in each level of a ecological pyramid gets lost as heat or used by the organism so that it cannot be passed on to the next trophic level?

• 80%
• 90%
• 10%
• 20%

This diagram shows the amount of energy that moves from one feeding level to another.

• Energy Pyramid
• Food Web
• Ecosystem
• Food Chain

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that do photosynthesis?

• A
• B
• C
• D

The number of organisms _________ with each successive (higher) trophic level. 

• increases
• decreases

All energy on Earth ultimately comes from what source?

• Water
• Sun
• Consumers
• Oxygen

Grizzly bears eat seeds, berries, roots, grasses, fungi, deer, elk, fish, and insects. This would make them a(n)...

• Detritivore

• Carnivore

• Herbivore

• Omnivore

Organisms which carry out the process of decomposition by breaking down dead or decaying organisms.

• Consumer
• Producer
• Decomposer
• Herbivore

Which animal is the top of this food web?

• mosquito

• alligator

• frog

• raccoon