Ecosystem Roles and Food Chains

The video explains the concept of food webs and trophic levels, highlighting how energy moves through ecosystems. It describes the roles of producers, primary, secondary, and tertiary consumers, and decomposers. The video also covers photosynthesis as the basis for energy production in food chains and the importance of decomposers in recycling nutrients.

What do food webs illustrate in an ecosystem?

• The growth of plants

• The migration of animals

• The path of energy transfer

• The movement of water

Which trophic level do primary consumers belong to?

• Trophic level one

• Trophic level two

• Trophic level three

• Trophic level four

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

• To decompose organic matter

• To produce energy-rich glucose

• To consume other organisms

• To migrate across ecosystems

Which organisms are typically primary consumers?

• Omnivores

• Herbivores

• Carnivores

• Decomposers

What do secondary consumers primarily eat?

• Producers

• Primary consumers

• Decomposers

• Quinary consumers

Which of the following is often a tertiary consumer?

• A fungus

• A rabbit

• A plant

• An alligator

What is the main function of decomposers in an ecosystem?

• To produce food

• To consume primary consumers

• To photosynthesize

• To break down dead materials

Which organisms are considered decomposers?

• Birds

• Fungi and bacteria

• Insects

• Reptiles

How do decomposers contribute to the nutrient cycle?

• By producing glucose

• By breaking down dead matter

• By eating secondary consumers

• By consuming producers

What is the final link in a food chain?

• Primary consumers

• Producers

• Decomposers

• Tertiary consumers