Food Webs and Energy Pyramids

Which of the following organisms is an autotroph?

• Grasshopper

• Frog

• Grass

• Snake

If producers in an ecosystem contain 5,000 kilocalories of energy, how much energy would be available to the secondary consumers?

• 500 kilocalories

• 50 kilocalories

• 5 kilocalories

• 5,000 kilocalories

What is the primary difference between a food chain and a food web?

• A food chain shows energy flow, while a food web shows nutrient cycling.

• A food chain represents a single pathway of energy flow, while a food web shows multiple interconnected pathways.

• A food chain includes decomposers, while a food web does not.

• A food chain only includes producers and primary consumers, while a food web includes all trophic levels.

How does high biodiversity contribute to the sustainability of an ecosystem?

• It reduces the overall energy flow within the ecosystem.

• It makes the ecosystem more vulnerable to environmental changes.

• It provides more alternative food sources, making the ecosystem more resilient to disruptions.

• It eliminates the need for decomposers in the ecosystem.