Food Webs & Energy Transfer through Ecosystems

Which of these organisms would most likely be found at the top of an energy pyramid? 

• clams - a primary consumer
• sardines - a primary consumer
• sharks - a secondary consumer
•  kelp - a primary producer
  

A diagram of a food web is shown below.Which organism receives the least amount of energy from the producers?

• Hawk
• Rabbit
• Grasshopper
• Mouse

All energy on Earth ultimately comes from what source?

• Water
• Sun
• Consumers
• Oxygen

In the food chain pictured, what type of organism is the bird?

• producer

• primary consumer

• secondary consumer

• tertiary consumer

In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?

• Herbivore
• Carnivore
• Omnivore
• Secondary Consumer

What does a Secondary Consumer eat?

• Tertiary Consumers
• Primary Consumers
• Producers
• Secondary Consumers

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

On which trophic level are primary consumers?

• 1
• 2
• 3
• 4

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

Energy pyramids show the amount of energy in different trophic levels in an ecosystem. The diagram shows a simplified energy pyramid for the Florida Everglades. Which level contains the most energy?

• Grass

• Gray fox

• Marsh rabbit

• Florida panther