1. Southern Luzon State University
College of Arts and Sciences
BS-Biology III
Quiz 8 FINALS
Name: _________________________________ Date: ____________ Score: _________
A. Multiple Choice. Write thecapitalletter of the correct answer before each number. (10 pts)
1.Which of the following would be considered an example ofbioremediation?
A. adding nitrogen-fixing microorganisms to a degraded C. reconfiguring the channel of a river
ecosystem to increase nitrogen availability
B. using a bulldozer to regrade a strip mine D. adding seeds of a chromium
accumulating plant to soil contaminated by
chromium
2.One characteristic that distinguishes a population in an extinctionvortex from most other populations is that
A. its habitat is fragmented. C. its genetic diversity is very low.
B. it is a rare, top-level predator. D. it is not well adapted to edge conditions.
3. The discipline that applies ecological principles to returningdegraded ecosystems to more natural states.
A. population viability analysis. C. conservation ecology.
B. landscape ecology. D. restoration ecology.
4. What is the single greatest threat to biodiversity?
A. habitat alteration, fragmentation, and destruction C. introduced species that compete with
and more prey species become extinct
B. disruption of trophic relationships as more prey D. overexploitation of commercially
important
on native species species
5. What are the three levels of biodiversity?
A.genetic, species, biome C. molecular, species, biome
B. genetic, population, ecosystem D. genetic, species, ecosystem
6. The declining population approach __________.
A. emphasizes the environmental factors that caused a population’s decline.
B. emphasizes smallness itself as an ultimate cause of a population’s extinction
C. emphasizes the impact of the loss of genetic diversity in a population
D. none of the above
7. A species that are considered likely to become endangered in the foreseeable future
A.ecosystem services C. introduced species
B. threatened species D. endangered species
8.A species that is “in danger of extinction throughout all or a significant portion of its range.
A. threatened species C. introduced species
B. ecosystem services D. endangered species
9. True or False. Small population conservation focuses on identifying species and population that are really small
and tries to help boost their numbers in species diversity.
10.Biological communities can recover from many types of disturbances through a series of ____________ that
occur during ecological succession.
A. rapid regrowth. C. restoration mechanisms
B. threatened species D. environmental requirements

2. Southern Luzon State University
College of Arts and Sciences
BS-Biology III
B. Essay. Choose only two (2) questions and explain briefly. (5pts. Each)
1. When you think about your career interest, does conservation of biodiversity play any part? How might you
connect your career interests to biodiversity protection?
2. Why does the reduced genetic diversity of small populations make them more vulnerable to extinction?
3. Which organism is more likely to become extinct, an endangered species or a threatened species? Explain
your answer.
4. Extinction is natural and no species persists forever. This statement is true, but is it a reason to not protect
biodiversity? Why?
5. How do bioremediation and biological augmentation differ?
BONUS QUESTION:
Give two examples of the animals presented in the video about the report.