1. Catalyst

2. Exploring Symbiosis Station 1: Clownfish and Anemone
The clownfish lives in the anemone and is protected from the outside ocean. The clownfish also cleans the anemone and scares away predators.

3. Exploring Symbiosis Station 2: Lichens (Algae + Fungus)
A lichen is a combination of algae and fungus that lives on a tree.
The algae secretes food for the fungus, while the fungus protects the algae from the weather

4. Exploring Symbiosis Station 3: Archerfish
Archerfish are able to knock down insects on low-lying branches by literally shooting streams of water. They can then eat the insects.

5. Exploring Symbiosis Station 4: Hookworms and Humans
Hookworms are microscopic organisms that can enter humans by burrowing into their skin, often on their feet. They enter the intestinal tract, where they drink a significant amount of blood. This can result in severe physical and mental impairment in the human.
(Don’t worry – they’ve been almost entirely eliminated from the US)

6. Exploring Symbiosis Station 5: Staphylococcus and Humans!
Staphylococcus (or Staph for short) are bacteria that live on human skin The human is not affected by the staph, but the staphylococcus gain food and shelter on the skin

7. Exploring Symbiosis Station 6: Grouper and Cleaner Fish
Cleaner Fish eat food out of the Grouper’s teeth.
The Cleaner Fish get food, while the Grouper gets cleaner, healthier teeth

8. Relations among organisms
There are three types of relationships among organisms:
Mutualism
Commensalism
Parasitism

9. Mutualism
What is it? An interaction between two species that benefits both. (“win-win”)

10. Commensalism
What is it? An interaction between species that benefits one and does not harm the other. Yay! I don’t mind!

11. Parasitism
What is it? One organism benefits but the other organism is harmed. Alright! Boooo!

12. Predation: NOT a symbiotic relationship!
Predation is when a predator seeks out and eats another organism (called a prey)
Don’t get confused with parasitism

13. Back to the stations…
Use what you have written for each organism and your new knowledge of relationships to identify whether each relationship is a:
Mutualism
Commensalism
Parasitism

14. 2 Examples: Giraffes and oxpeckers The tongue biters
On your worksheet decide which kind of relationship is occurring and how you know

15. Parasitism
Example: Mistletoe and Trees Mistletoe is a plant that latches on to trees and steals food from them. The mistletoe benefits, but the tree is harmed.

16. Mutualism
Example: Flowers and insects The insects help spread pollen to make new plants. The flowers give the insects food

17. Commensalism
Example: The remora fish and a shark The remora fish suctions on to the shark for a free ride. The shark doesn’t mind!

18. Parasite Article
Read the article on mind controlling parasites and answer the questions on the last page
While you read, be sure to annotate