1. Ecology Interactions Activity

2. Question 1 C A B D E G F What is an autotroph? What is a heterotroph?
Write if these specimens are autotrophs or heterotrophs.
Coral C A B
Blue green bacteria D E G F
Protozoan

3. Question 2
For each picture, write down the name of the organism (ex: insect) & identify it as a producer or consumer. A B
Truffles C D
Phytoplankton G G E I H F

4. Question 3 Write 3 sentences describing decomposers.
Describe the importance of decomposers to the ecosystem.
Give several examples of decomposers.
What do you think would happen to an ecosystem if there were no decomposers?

5. Question 4 How is a scavenger different from a decomposer?
For each picture shown below, write the name of the organism & state if it is a scavenger or decomposer. A C B E D
Dung Beetle

6. Question 5 What is a food chain?
Which organism shown below is an herbivore?
Which organism(s) shown below is a carnivore?
Are any of these organisms omnivores? Why or why not?
Build a food chain. Write down the names of the organisms in the proper order & label each one as a producer, primary consumer, secondary consumer, or tertiary consumer.

7. Question 6 How is a food web different from a food chain?
Draw a diagram of a food web that includes 1 producer, 2 primary consumers, 2 secondary consumers, and 2 decomposers.
Label your drawings so I know what they are!

8. Question 7
Construct a food web (no drawings necessary) with yourself at the center. Select foods that you enjoy eating and trace their energy back through the web (ex: skittles are mostly sugar which came from a plant). Try to make as many connections as possible.
Hint: If you include animal products, don’t forget about to include what the animal ate.

9. Question 8
Write 3 sentences explaining the concept of biological magnification.
In the food web shown below, which organism(s) would be most seriously effected by a increased amount or pollution such as methyl mercury or DDT being dumped into the ocean?
Explain your choice(s).

10. Producers Primary Consumers Secondary Consumers Tertiary Consumers
Question 9
Use the food web shown below to fill in the chart. Be sure to include each organism (15 total). Put the correct animal under what type of producer/consumer they are.
Producers Primary Consumers Secondary Consumers Tertiary Consumers