Energy Flow and Trophic Levels Quiz

What is the primary source of energy for all life on Earth?

• The Moon
• The Sun
• Geothermal energy
• Wind energy

Which of the following best describes producers?

• Organisms that eat other organisms
• Organisms that produce energy from nonliving sources
• Organisms that decompose dead materials
• Organisms that rely on other organisms for energy

What process do producers primarily use to capture energy from sunlight?

• Cellular respiration
• Photosynthesis
• Chemosynthesis
• Fermentation

Which of the following is an example of a heterotroph?

• Cyanobacteria
• Plants
• Deep sea vent bacteria
• Mice

What is the main purpose of cellular respiration in consumers?

• To capture sunlight
• To produce glucose
• To release ATP
• To decompose organic matter

Which type of consumer only eats vegetation?

• Carnivores
• Omnivores
• Herbivores
• Detritivores

What does the Rule of 10 state about energy transfer in food chains?

• All energy is transferred
• Only 10% of energy is transferred to the next level
• Energy increases at each level
• Energy is lost as heat only at the top level

In a food web, what do the arrows represent?

• The direction of energy flow
• The number of organisms
• The types of consumers
• The amount of sunlight

Which trophic level consists of organisms that eat primary consumers?

• Producers
• Primary consumers
• Secondary consumers
• Tertiary consumers

What is a biomass pyramid used to represent?

• The number of organisms at each trophic level
• The total mass of living organic matter at each trophic level
• The energy available at each trophic level
• The flow of energy in a food chain