Ecosystem Dynamics and Nutritional Relationships Quiz

Which of the following best defines an ecosystem?

• A single species living in an environment
• A community of living and non-living things interacting together
• Only the plants in a specific area
• A group of predators hunting together

What is the primary role of producers in an ecosystem?

• To eat other organisms
• To break down dead matter
• To make their own food using sunlight or chemical energy
• To compete for resources

In a food web, what makes the relationships more complex compared to a food chain?

• More predators
• Multiple interconnected feeding pathways
• Larger organisms
• More decomposers

Which nutritional relationship describes when both organisms benefit?

• Predation
• Competition
• Commensalism
• Mutualism

What happens to energy as it moves through trophic levels?

• Energy increases
• Energy remains constant
• Energy is lost at each transfer
• Energy is completely recycled

Which organism would be considered a primary consumer?

• A grass plant
• A lion
• A rabbit
• A decomposing bacteria

What is an example of commensalism?

• Bees pollinating flowers
• Remora fish on sharks
• Clownfish protecting sea anemones
• Lions hunting gazelles

Which ecosystem component recycles nutrients back into the system?

• Producers
• Primary consumers
• Secondary consumers
• Decomposers

What is the bottom trophic level in an ecosystem?

• Primary consumers
• Secondary consumers
• Decomposers
• Producers

Which factor contributes to energy loss in ecosystem transfers?

• Photosynthesis
• Predation
• Metabolism
• Pollination