Video: Energy Flow in Ecosystems

What is the primary role of a producer in an ecosystem?

• Consuming other organisms for energy.

• Breaking down dead organic matter.

• Creating its own food through processes like photosynthesis.

• Eating primary consumers.

Which organisms are found on the first trophic level of the energy pyramid?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

How much energy is transferred to the next level?

• 100%

• 1%

• 10%

• 1000%

If the producers in an ecosystem contain 25,000 kilocalories (Kcal) of energy, how much energy would typically be available to the secondary consumers?

• 25,000 Kcal

• 2,500 Kcal

• 250 Kcal

• 25 Kcal

​​ (a)   is the variety of all types of organisms living in an area

• Biodiversity
• Food chain
• Ecosystem
• Population density

Which statement best describes the difference between a food chain and a food web?

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

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

• A food web only contains producers, while a food chain includes all trophic levels.

• A food web represents a less stable ecosystem than a food chain.

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

• It simplifies the feeding relationships, making them easier to track.

• It ensures that each organism has only one specific food source.

• It provides alternative food sources and roles, making the ecosystem more resilient to disturbances.

• It increases the total amount of energy stored at the producer level.