Ecosystem Roles and Energy Flow

The video explains how living things need energy to grow, move, and reproduce. It introduces food chains as a way to understand energy transfer between organisms, starting from the sun to producers like plants, and then to various levels of consumers. The role of decomposers in recycling nutrients is also discussed.

What is the primary source of energy for all living things?

• The wind

• The ocean

• The sun

• The moon

In the given food chain example, which organism absorbs energy directly from the sun?

• Spider

• Bird

• Grass

• Grasshopper

What process do plants use to convert sunlight into energy?

• Fermentation

• Digestion

• Photosynthesis

• Respiration

Which type of consumer eats plants directly?

• Decomposers

• Third order consumers

• Second order consumers

• First order consumers

What do we call animals that eat other animals?

• Producers

• Carnivores

• Decomposers

• Herbivores

Which of the following is a third order consumer?

• Lion

• Grasshopper

• Spider

• Grass

Which of the following is NOT a consumer?

• Bird

• Grasshopper

• Spider

• Grass

What happens to the nutrients in dead organisms?

• They are released back into the soil

• They disappear

• They are eaten by birds

• They are absorbed by the sun

Which organisms are responsible for breaking down dead plants and animals?

• Carnivores

• Decomposers

• Consumers

• Producers

What is the role of decomposers in the ecosystem?

• To recycle nutrients

• To hunt prey

• To consume plants

• To produce energy