1. Symbiosis Review/Game!
On your sheet, fill in the following symbiotic relationships that you see!

2. Fill in the following chart on your sheet right now!
Type of Symbiosis
Organism 1
Organism 2
Mutualism
Predator / Prey
Commensalism
Parasitism
Competition
+ means they benefit from the relationship
0 means nothing, they neither benefit nor harmed from the relationship
- means they are harmed in a negative way from the relationship

3. Check and Review Type of Symbiosis Organism 1 Organism 2 Mutualism +
Predator / Prey
Commensalism
Parasitism -
Competition -
Note: Remember, Predator / Prey relationships are mutalistic! Predators benefit from having prey to eat and based upon the evolution and adaptation of the prey, force them to be smarter and faster. Prey benefit from having predators control their populations from exceeding their carrying capacity (the maximum amount of a population to be sustained from their environment) and destroying the entire population.
Competition is the similar – by competing for resources checks the population and ensures those that reproduce are the most fit (smartest, fastest, best suited to survive) to the environment. However, this hurts all involved in that particular relationship.
Key: + means they benefit from the relationship
0 means nothing, they neither benefit nor harmed from the relationship
- means they are harmed in a negative way from the relationship

4. Your Turn!
On the next slides, determine which of the following five symbiotic relationships they represent!
Keep in mind competition is also between species or within the same species who are competing for the same resources (food, habitat and niche.)
Keep a running tally and we’ll share our thoughts and debate at the end! Good luck!

5. Wile E. Coyote chases the Road Runner again and again…
# 1: Which am I?
Predator-Prey
Wile E. Coyote chases the Road Runner again and again…

6. A swollen tick is found on the neck of a dog.
# 2: Which am I?
Parasitism
A swollen tick is found on the neck of a dog.

7. # 3: Which am I?
Mutualism
Acacia ants from Africa feed off sugar deposits on the Acacia tree and defend it from other insects.

8. Barnacles hitch a ride on a traveling whale.
# 4: Which am I?
Commensalism
Barnacles hitch a ride on a traveling whale.

9. Two male gazelles fighting over females.
# 5: Which am I?
Competition
Two male gazelles fighting over females.

10. Plant seeds (sometimes called burrs) are stuck to a horse’s mane.
# 6: Which am I?
Commensalism
Plant seeds (sometimes called burrs) are stuck to a horse’s mane.

11. Kudzu, native to Japan, takes over a local forest in North Carolina.
# 7: Which am I?
Parasitism
Kudzu, native to Japan, takes over a local forest in North Carolina.

12. A bee drinks nectar and collects pollen from a flower.
# 8: Which am I?
Mutualism
A bee drinks nectar and collects pollen from a flower.

13. Heartworms have infested a dog’s heart.
# 9: Which am I?
Parasitism
Heartworms have infested a dog’s heart.

14. # 10: Which am I?
Mutualsim
For the same reason for the early domestication of the wolf, a man hunts with his dog.

15. A lion chasing away a hyena from a fresh kill.
# 11: Which am I?
Competition
A lion chasing away a hyena from a fresh kill.

16. Bacteria Nodules fixing Nitrogen on the roots of Legume Plants.
# 12: What am I?
Mutualism
Bacteria Nodules fixing Nitrogen on the roots of Legume Plants.

17. A Lichen is chillin’ on a log.
# 13: Which am I?
Competition
A Lichen is chillin’ on a log.

18. The Oxpecker eats parasites and flies off the African Ox.
# 14: Which am I?
Mutualsim
The Oxpecker eats parasites and flies off the African Ox.

19. A stick bug mimics a tree (also called camouflage) to avoid predators.
# 15: Which am I?
Commensalism
A stick bug mimics a tree (also called camouflage) to avoid predators.

20. # 16: Which am I?
Parasitism
Cowbirds lay their eggs in a Carolina Warblers and Wrens’ Nests to raise their young.

21. An Eastern Blue Bird and a House Sparrow fight over shared resources.
# 17: Which am I?
Commensalism
An Eastern Blue Bird and a House Sparrow fight over shared resources.

22. # 18: Which am I?
Parasitism
A hornworm is covered with pupating wasps will eventually kill the host.

23. A Clown Fish hides in an Sea Anemone.
# 19: Which am I?
Commensalism
A Clown Fish hides in an Sea Anemone.

24. # 20: Which am I?
Commensalism
A bee is tricked in carrying pollen from an orchid while attempting to mate with a fake female (mimicry).

25. # 21: Which am I?
Commensalism
This squirrel has evolved to be the same color as his habitat, the oak tree.

26. Protozoans living in a Cow’s stomach.
# 22: Which am I?
Commensalism
Protozoans living in a Cow’s stomach.

27. Let’s Review
Fill out the chart on your sheet. What were the sample relationships?
What were some relationships did you struggle with?
Let’s look at some symbiosis cartoons that you made, what were those relationships?

28. Slides – Check and Review
Case Scenario
Organism I
Organism II
Type of Relationship?
# 1: Coyote and Roadrunner +
Predator / Prey
# 2: Dog and Tick -
Parasitism
# 3: Ants and Acacia Tree
Mutualism
# 4: Barnacles and Whale
Commensalism
# 5: Two male Gazelles Fighting
Competition
# 6: Horse and Burrs

29. Slides – Check and Review
Case Scenario
Organism I
Organism II
Type of Relationship?
# 7: Kudzu and Trees + -
Parasitism
# 8: Bee and Flower
Mutualism
# 9: Dog and Heartworms
# 10: Dog and Man
# 11: Lion and Hyena
Competition
# 12: Bacteria and Legumes
# 13: A Lichen (fungus & alga)

30. Slides – Check and Review
Case Scenario
Organism I
Organism II
Type of Relationship?
# 14: Ox pecker and Ox +
Mutualism
# 15: Stick Bug and Tree
Commensalism
# 16: Cowbirds and Warblers -
Parasitism (Brood Parasitism)
# 17: Bluebird and Sparrow
Competition
# 18: Hornworm and Wasps
Parasitism

31. Slides – Check and Review
Case Scenario
Organism I
Organism II
Type of Relationship?
# 19: Clownfish and Anemone +
+/0
Mutualism or Commensalism
# 20: Bee and Orchid
- / 0
Parasitism or Commensalism
# 21: Squirrel and Tree
Mutualism
# 22: Protozoans and Cow
Which ones were particularly tough?
Why do you think it’s not so easy to categorize certain relationships?