Energy Transfer Quiz

What is the 10% rule in the context of energy transfer in ecosystems?

• 10% of the energy is lost at each trophic level.

• 10% of the energy is transferred to the next trophic level.

• 10% of the energy is used for photosynthesis.

• 10% of the energy is stored as biomass in producers.

In a food chain, if the producers have 5000 kcal of energy, how much energy is available to the primary consumers?

• 500 kcal

• 50 kcal

• 5000 kcal

• 50,000 kcal

Which process is primarily responsible for the capture of energy from sunlight in ecosystems?

• Cellular respiration

• Photosynthesis

• Decomposition

• Fermentation

What is the correct order of trophic levels in a food chain, starting from the base?

• Producers, Primary Consumers, Secondary Consumers, Tertiary Consumers

• Primary Consumers, Producers, Secondary Consumers, Tertiary Consumers

• Secondary Consumers, Tertiary Consumers, Producers, Primary Consumers

• Tertiary Consumers, Secondary Consumers, Primary Consumers, Producers

How much energy is available to the secondary consumers if the primary consumers receive 200 kcal?

• 20 kcal

• 2000 kcal

• 2 kcal

• 200 kcal

What is the main function of decomposers in an ecosystem?

• To produce energy through photosynthesis

• To consume primary consumers

• To break down dead organisms and recycle nutrients

• To transfer energy directly to tertiary consumers

In an energy pyramid, which level has the most energy?

• Tertiary Consumers

• Secondary Consumers

• Primary Consumers

• Producers

Why is the energy transfer in ecosystems not 100% efficient?

• Because some energy is always lost as heat

• Because consumers use all the energy they consume

• Because producers do not capture all sunlight

• Because decomposers release energy into the atmosphere

If a tertiary consumer receives 1 kcal of energy, how much energy did the primary consumer in the same food chain receive?

• 10 kcal

• 100 kcal

• 1,000 kcal

• 10,000 kcal

What role do plants play in a food chain?

• Primary consumers

• Secondary consumers

• Producers

• Tertiary consumers