1. What is the relationship?
Commensalism
Mutualism
Predation
Parasitism
Competition
X X
x x

2. BOTH species benefit from the relationship
Mutualism
BOTH species benefit from the relationship
Commensalism
One species benefits from the relationship and the other is neither helped nor harmed

3. Parasitism
One species lives in or on another organism (the host) and harms it.
Predation
One organism captures and feeds on another organism.

4. Two or more species fighting for resources
Competition
Two or more species fighting for resources

5. The adult wasps sting the Catalpa Worm, injecting their eggs
The adult wasps sting the Catalpa Worm, injecting their eggs.  The eggs hatch and feed on worm carefully keeping it alive. Relationship?

6. Parasitism

7. Hyenas and lions fight for food .

8. Competition

9. A crab that carries a venomous sea urchin for protection
A crab that carries a venomous sea urchin for protection. The urchin receives transportation. What is the relationship?

10. Mutalism

11. The Philippine Shrimp retreats into the narrow spaces between coral whenever it feels threatened. Coral is not harmed. What is the relationship?

12. Commensalism

13. Lampreys are primitive snake like fish with limited digestive
systems. They attach to and
feed on the
body fluids of fish. This relationship is an example of…

14. Parasitism

15. The American Alligator searches in beaver dams to eat beavers
The American Alligator searches in beaver dams to eat beavers. What relationship is this?

16. Predation

17. Taenia worm burrows in human eye which can cause the human to go blind
Taenia worm burrows in human eye which can cause the human to go blind. What type of relationship is this?

18. Parasitism

19. Moray Eel with Cleaner Fish-
Moray Eel gets a clean mouth and Cleaner Fish gets a meal. Relationship?

20. Mutalism

21. The Purple Sea Star feeds on muscles
The Purple Sea Star feeds on muscles. What relationship between the starfish and the muscles?

22. Predation

23. Two ants struggle for a caterpillar.

24. Competition

25. Egrets eat insects that feed on the cow
Egrets eat insects that feed on the cow. What type of relationship is this?

26. Mutalism

27. Barnacles adhering to the skin of a whale.
Barnacles get a ride to gather food and the whale is unaffected.
Relationship? .

28. Commensalism

29. Oxbird eats the parasites on a Antelope. Relationship?

30. Mutalism

31. Mistletoe grows on a tree and receives nutrients which harms the tree
Mistletoe grows on a tree and receives nutrients which harms the tree? Relationship?

32. Parasistism

33. Barnacles attach themselves to the shells of sea turtles
Barnacles attach themselves to the shells of sea turtles. The barnacles receive a home and transportation. Turtle is unaffected. Relationship?

34. Commensalism

35. The Sponge Crab is wearing a "hat" that consists of a living sponge colony. The sponge gains transportation while the crab gains a disguise. Relationship?

36. Mutalism

37. Remoras live very close to sharks
Remoras live very close to sharks. The shark does not bother the remora, but the remora eats the leftover food the shark drops or does not eat. Relationship?

38. Commensalism

39. Orchids grow on the branches of high trees
Orchids grow on the branches of high trees. These orchids get more water and sunlight than those on the ground. The tree is unaffected by the orchid’s presence. This relationship is an example of…

40. Commensalism

41. Ants lay eggs on an Acacia tree
Ants lay eggs on an Acacia tree. Acacia covers the infected area with brown flesh. Ants reproduce while tree is harmed. What type of relationship is this?

42. Parasitism

43. Plants on the rainforest floor contend for sunlight.

44. Competition

45. This bear eats you. Relationship?