1. Trophic Levels 13.3-4

2. Producers Primary Consumers SecondaryConsumers Tertiary Consumers

3. Trophic Levels

4. On a piece of paper, copy the chart below. While watching the video, fill in all the creatures into their appropriate category.

5. How did you do

6. Autotroph Producers Herbivore Primary Consumers Heterotroph Carnivores SecondaryConsumers Tertiary Consumers

7. Now, take the new terms and place them under each column they belong to. • Autotroph, Carnivore, Herbivore, Heterotroph

8. Now, take the terms below and place them under each column they belong under. • Autotroph, Carnivore, Herbivore, Heterotroph

10. Food Chain Linear They show the flow of energy Length limited by available energy

11. Food Web • Expanded • More complex • Producers Major plants • Primary consumers Animals that eat plants • Secondary consumers Animals that eat herbivores • Higher consumers More complicated because they may be both secondary and tertiary • Decomposers Fungi, bacteria that eat the dead

12. 5 tertiary consumers tertiary consumers 75 g/m2 secondary consumers 5000 150g/m2 secondary consumers primary consumers 500,000 primary consumers 675g/m2 energy lost producers 5,000,000 producers 5,000,000 energy transferred 2000g/m2 2000g/m2 producers producers ECOLOGICAL PYRAMIDS Pyramid of energy • Least Energy = top consumers • Most Energy = producers 10% of energy available at each trophic level is converted into new biomass at above level Pyramid of numbers • Least = top consumers • Most = producers Pyramid of Biomass