1. Community Ecology
Chapter 56

5. Competive Exclusion

8. Even plants have adaptations…
Chemical defenses
Thorns, spines, prickles

17. Symbiosis What it means: Two organisms that live together
Temporarily or for a longer time
At least one of the organisms benefits from the relationship

18. What are the different kinds of symbiosis?
Mutualism
Commensalism
Parasitism
both organisms benefit
one organism benefits
one organism benefits
one organism is unaffected
one organism is harmed

19. Organism One Organism Two
Mutualism
Organism One Organism Two

20. Organism One Organism Two
Commensalism
Organism One Organism Two

21. Organism One Organism Two
Parasitism
Organism One Organism Two

22. What symbiotic relationship is this?
Acacia Plant & Ants
The ants lay eggs on acacia tree so they get a nice safe place for their eggs. The acacia covers the infected area with brown flesh (called a gall.) The plant has to use valuable resources to create the gall.
parasitism
What symbiotic relationship is this?

23. What symbiotic relationship is this?
Anemone & Anemone Fish
This fish lives its entire adult life among the tentacles of a bulb- tentacle sea anemone. Anemone fish do not get stung by the anemone as would most other fish so they get protection from predators. The fish often drop food scraps which the anemones can eat.
mutualism
What symbiotic relationship is this?

24. What symbiotic relationship is this?
Shark & Remora
The remora attaches itself to the shark and saves energy since it doesn’t have to swim, and it gets to snack on the sharks kills. The shark doesn’t get anything.
commensalism
What symbiotic relationship is this?

25. Keystone Species
Species that maintains a more diverse community by reducing competition between species or altering the environment to create new habitats.