Download Exam 7 Review - Iowa State University

Worksheet:
Exam 7 Review
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Kelly
Biol 211 (1)
Roe
4/30/14
1.) Species that exert strong control over a community due to their pivotal ecological role are called:
A) Keystone species
B) Dominant species
C) Top-down species
D) Bottom–up species
2.) The amount of chemical energy that is produced/stored by autotrophs and is available for consumption
is called
A) Net Primary Production
B) Cellular Respiration
C) Gross Primary Production
D) Photosynthesis
3.) The conversion of light energy to plant tissue is an example of
A) secondary production
B) secondary consumption
C) primary production
D) herbivory
E) primary consumption
4.) As energy flows through an ecosystem, what percentage of energy is lost at each step
A) 5%
B) 1%
C) 15%
D) 10%
5.) Which of the following terms encompasses all the others
A) heterotrophs
B) herbivores
C) carnivores
D) primary consumers
E) secondary consumers
6.) Which of the following terms encompasses all the others
A) species diversity
B) biodiversity
C) genetic diversity
D) ecosystem diversity
E) species richness
7.) According to the U.S. Endangered Species Act, the difference between an endangered species and a
threatened species is:
A) only vertebrates can be endangered species
B) a threatened species is closer to extinction
C) an endangered species is closer to extinction
D) only tropical species can be endangered
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8.) The extinction vortex particularly effects __________ populations
A) large
B) growing
C) healthy
D) small
9) Which of the following is true about fragmented landscapes?
A) fragmented landscapes support greater biodiversity
B) fragmented landscapes aid in increasing gene-flow.
C) organisms easily move between fragments
D) fragmented landscapes support lower biodiversity
10.) Which of the following is considered to be the greatest threat to biodiversity?
A) increased atmospheric carbon dioxide
B) habitat destruction
C) over exploitation of species
D) biological reserves
11.) A secondary consumer (a fox) receives what percent of the energy fixed by primary producers?
A) 1.0%
B) 0.1%
C) 10%
D) 20%
12.) A cow’s herbivorous diet indicates that it is a(n)
A) primary consumer
B) secondary consumer
C) primary producer
D) secondary producer
13.) Introduced species
A) can disrupt the balance of the natural species with which they become associated.
B) often fail to colonize the new area.
C) may become common enough to become pests.
D) Both B and C are correct.
E) A, B, and C are all correct.
14.) Conservation efforts to revive the Illinois Prairie Chicken were threatened by_____
A) lack of genetic variability
B)lack of sanctuary
C) pesticides
D)Drought
15.) Which of the following cycles includes photosynthesis as a key step?
A) nitrogen cycle
B) Water cycle
C) Carbon cycle
D) Phosphorous cycle
Ecosystem Ecology: Which is/are recycled? Source?
Energy Flow
Chemical Cycling
- Label the trophic levels. Where are heterotrophs?
- Why does each level get smaller?
-What might the smaller triangle symbolize?
-What is secondary production?
Laws of Thermodynamics:
Briefly explain the laws:
1.
2.
-How do these laws affect chain length?
Production Efficiency vs. Trophic level transfer efficiency
Difference in Words:
Difference in Numbers:
What affects these numbers:
What is the difference between GPP and NPP? What are they? How can you quantify them?
Biogeochemical Cycles: (Briefly Explain)
1.
2.
Global Cycle vs. Local Cycle
Phase of Matter:
Examples:
3.
Nitrogen Cycle:
-Briefly(in your own words) explain the term and place in a cycle.
-What organisms aid each step?
(Nitrogen Fixation, Ammonification, Nitrification, Assimilation, Denitrification)
Harmful Processes: Difference? What is harmed?
Biomagnification
Eutrophication
Conservation Ecology:
What is the difference between Conservation and Restoration Ecology? (Briefly=3 words each!)
3 types of Biodiversity: (Explain briefly and include importance)
1.
2.
3.
Conservation of Biodiversity:
What are the 3 main reasons to conserve Biodiversity? (Add details to support each)
1.
2.
3.
How does the presence of more species affect an ecosystem?
Threats to Biodiversity:
1.
2.
3.
4.
Extinction:
-Is it normal?
-How do humans affect it?
-Explain the extinction vortex hypothesis? Populations affected? Major events?
- In the case of the Illinois Greater Prairie Chicken how did they revive the population?
Preservation:
Threatened Species vs. Endangered Species
If you had to make a nature preserve how would you design it? Where at?
Would you include movement corridors? (What are they?)
Other things to know:
 Dominant Species
 Keystone Species
 Umbrella Species
 Flagship
 Indicator
 Liebig's law of the minimum
 Haber Bosch
 Relict Species
 Colony Collapse Disorder