Lesson #11: Trophic Levels Objective: Explain the trophic levels found in a sustainable food chain.

Complete the pyramid and glue into your notebook. Activity In your notebook, define each of the following terms: Producer, Primary Consumer, Secondary Consumer, Tertiary Consumer Complete the pyramid and glue into your notebook.

Notes! (Cause we love them!) Trophic Levels

Trophic Levels Levels in a food web

Trophic Levels Levels in a food web Food webs show intricate relationships between organisms.

Trophic Levels Levels in a food web Food webs show intricate relationships between organisms. Producers: Autotrophs, use sunlight to create energy

Trophic Levels Levels in a food web Food webs show intricate relationships between organisms. Producers: Autotrophs, use sunlight to create energy Consumers: Heterotrophs, consume other organisms for energy

Stable ecosystems have to support each level of consumers.

Stable ecosystems have to support each level of consumers. The 10% Rule

Stable ecosystems have to support each level of consumers. The 10% Rule Organisms only receive 10% of the energy available in what they eat

Stable ecosystems have to support each level of consumers. The 10% Rule Organisms only receive 10% of the energy available in what they eat 90% of the energy is lost as heat or other forms of non usable energy

Trophic Levels Organization

Trophic Levels Organization Producers provide 100% of the energy in an ecosystem

Trophic Levels Organization Producers provide 100% of the energy in an ecosystem Largest group of organisms

Trophic Levels Organization Producers provide 100% of the energy in an ecosystem Largest group of organisms Tertiary consumers obtain very little energy from producers, and therefore take many organisms to sustain them

Trophic Levels Organization Producers provide 100% of the energy in an ecosystem Largest group of organisms Tertiary consumers obtain very little energy from producers, and therefore take many organisms to sustain them Smallest group of organisms