AEC 360  Ecology

Review Questions, Exam 3


1. What evolutionary tradeoffs do diseases face?  How do diseases modify their host's behaviors to promote their transmission?

2.  How can predators and their prey coexist?  How can two competing species coexist?  (alternatively, why might these interacting species be expected not to exist together?)

3.  What is biocontrol?  What are important characteristics of biocontrol organisms that are introduced to control pest populations?

4.  How do we modify the exponential growth equation to represent effects of predators and prey on each other in mathematical models?  How can the outcomes of predator-prey interactions be analyzed graphically?

5.  Make sure to understand the difference between exploitative and interference competition, as well as between inter- and intra-specific competition.

6.  How do we modify the logistic equation to represent effects of competitors on each other in mathematical models?  How can the outcomes of competition be analyzed graphically?

7.  What is coevolution?  What are examples of coevolution?

8.  What are the three classes of mutualisms?  Name examples of each.

9. How do new species form?

10.  What are tradeoffs in the evolution of characteristics that are distinctly human?

11.  Here is an example of a previous exam question:
Defend or refute:  'Since divergence from ancestors that became chimps, homonid evolution has been characterized by numerous speciation and extinction events.'

12.  What are keystone species?  How do top-down and bottom-up interactions regulate communities?