Food Webs and Energy Pyramids: Bedrocks of Biodiversity

The video explores the concepts of food chains and food webs, emphasizing the flow of energy through trophic levels and the importance of biodiversity in ecosystems. It explains how energy is transferred from producers to various levels of consumers and highlights the role of decomposers. The video also discusses the impact of changes within food chains and the resilience provided by biodiversity.

What is the primary role of a producer in a food chain?

• To consume other organisms

• To hunt for prey

• To produce energy from sunlight

• To decompose dead matter

In an energy pyramid, what percentage of energy is typically transferred from one trophic level to the next?

• 5%

• 10%

• 25%

• 50%

What might happen if a primary consumer is removed from a food chain?

• Decomposers will stop functioning

• Producers will increase in number

• Secondary consumers will have less food

• Tertiary consumers will become producers

How does a food web differ from a food chain?

• A food web is a single linear path

• A food web includes only producers

• A food web excludes decomposers

• A food web shows multiple interconnected food chains

Why is biodiversity important in an ecosystem?

• It reduces the number of species

• It limits the number of food chains

• It makes ecosystems more resilient to changes

• It increases the energy flow

What role do decomposers play in an ecosystem?

• They compete with producers

• They break down dead matter

• They consume living organisms

• They produce energy from sunlight

Which of the following is an example of a decomposer?

• Bacteria

• Snake

• Frog

• Grasshopper