Course: BIS 105 Environmental Biology

Unit 6 Learning Module

Review

Review Questions

1. In ecology, what is a community?

2. Define predation and give an example of a predator and its prey.

3. What are two possible outcomes of interspecific competition?

4. List three basic types of symbiotic relationships.

5. What is ecological succession and when does it occur?

6. Assume that a destructive beetle was accidentally introduced to California from Europe. The beetle has no natural predators in California and is becoming a major pest. Describe how biological pest control might be used to control this beetle.

7. A forest was recently disturbed, and several pioneer species have moved in. Which type of ecological succession is taking place? How do you know?

8. Why do species interactions often lead to co-evolution of the species involved? Give an example to illustrate your answer.

9. Summarize how ideas about ecological succession and climax communities have changed.

10. Describe the mechanisms by which human population growth and resource use causes increased extinction rates.