Community Interactions Review
1. A situation in which organisms of two species interact or live in a close relationship is termed a
_____________ relationship.
2. An organism that provides nutrients and may suffer as a result f a close interaction with another organism is
termed the _______________.
3. A lichen is an example of a _________________ interaction.
4. Within a balanced community competition for resources is always most intense amongst which individuals?
5. If two species compete for the similar resources in such a way that their niches partially overlap and both end
up coexisting in the same habitat you would predict they would ultimately be restricted to their _________
niche.
6. In the situation above, how does the fundamental niche of each species change as a consequence of their
interactions?
7. The work of Gause was with _________________ and involved the formulation of the principle of
competitive exclusion.
8. A process of ____________________ may allow two species competing for similar resources to divide a
niche.
9. The organism responsible for transmission of disease from one host to another is considered the
___________.