Quiz 12-1
- 1.
If you go hiking in the Smokys and climb one of the mountains you will find that you pass through several plant communities as you get higher. The boundary between these communities may be very sharp and easy to identify or may be very gradual and difficult to see. This boundary zone, whether sharp or gradual is referred to as a(n)
- A.
Community cline
- B.
Ecotone
- C.
Community gradient
- D.
Junction zone
Correct Answer
B. Ecotone -
- 2.
The gradual process of environmental change and species replacement is called
- A.
The theory of continental drift
- B.
Succession
- C.
thermoregulation
- D.
El Nino
Correct Answer
B. Succession -
- 3.
A climax community
- A.
is the 1st stage of succession
- B.
Gives rise to other communities
- C.
Is stable as long as the environment is stable
- D.
Is made up of the same members regardless of what ecosystem it's in
Correct Answer
C. Is stable as long as the environment is stable -
- 4.
Which of the following is not a trend in secondary succession?
- A.
Plant diversity becomes higher later in succession
- B.
Biomass becomes smaller later in succession
- C.
NPP is lower later in succession
- D.
Organisms tend to be K-selected later in succession
Correct Answer
B. Biomass becomes smaller later in succession -
- 5.
Which of the following is an example of primary succession?
- A.
Lichens living on bare rock slowly break it down into soil allowing grasses to establish
- B.
An agricultural field is abandoned and native species colonize the area
- C.
After a logging company cuts the timber and leaves the area, grasses, shrubs and eventually trees grow on the site
- D.
After a wild fires burns a tract of forest, small herbs and grasses grow followed by bushes and trees
Correct Answer
A. Lichens living on bare rock slowly break it down into soil allowing grasses to establish -
- 6.
Which of the following statements is false?
- A.
The pioneer community in the primary succession of bare rock is lichens
- B.
The climax community is stable as long as the climate is stable
- C.
In secondary succession, soil is absent
- D.
The climax community of eastern Tennessee farmland which has undergone secondary succession is an eastern deciduous forest
Correct Answer
C. In secondary succession, soil is absent -
- 7.
All of the possible roles an organism could fill in the community is called its
- A.
Tolerance level
- B.
Competitive index
- C.
Range
- D.
Fundamental niche
Correct Answer
D. Fundamental niche -
- 8.
The concept that a single niche can be occupied by only one species at a given time in known as
- A.
Competitive exclusion
- B.
Limited carrying capacity
- C.
symbiosis
- D.
r-selectionist strategy
Correct Answer
A. Competitive exclusion -
- 9.
An example of a negative symbiotic relationship is
- A.
Commensalism
- B.
Parasitism
- C.
Mutualism
- D.
Unionism
Correct Answer
B. Parasitism -
- 10.
Mutualism is an interaction between two species in which
- A.
Both species benefit
- B.
neither species benefits
- C.
One benefits and the other receives no benefit or harm
- D.
Both are harmed
Correct Answer
A. Both species benefit -
- 11.
Ants live in close association with certain species of Acacia trees. The ants protect the Acacia from invasion by other insects while the tree provides nectar for the ants to eat. This is an example of
- A.
Parasitism
- B.
Commensalism
- C.
Mutualism
- D.
Ecotropism
Correct Answer
C. Mutualism -
- 12.
r-selected species generally make good colonizers of disturbed habitats because of their
- A.
Low carrying capacities
- B.
High reproductive rates
- C.
intensive parental care
- D.
High individual survival rates
Correct Answer
B. High reproductive rates -
- 13.
All of the following characteristics are typical of a k-selected species except
- A.
Death rates are relatively low early in life
- B.
There is a large amount of parental care
- C.
They are found in stable climates
- D.
They produce many offspring during each reproductive period
Correct Answer
D. They produce many offspring during each reproductive period -
- 14.
After a period of stable population size the natality rate increases by 10% and the rate of immigration increases by 20%. How will this effect population size?
- A.
Population size will begin to decrease
- B.
Population size will begin to increase
- C.
population size will remain unchanged
- D.
One can not tell because the initial rates are unknown
Correct Answer
B. Population size will begin to increase -
- 15.
Which of the following factors is not important in determining the biotic potential (r) for a population?
- A.
The number of offspring produced per reproductive cycle
- B.
The length of the reproductive life span
- C.
The age at which reproduction begins
- D.
The size of the population's range
Correct Answer
D. The size of the population's range -
- 16.
The population of fish in a pond stays at or near 200 individuals. If the population exceeds this number the resources are consumed and the population crashes and eventually returns close to 200. The number of fish the pond can support over time is its
- A.
Competitive number
- B.
Biotic potential
- C.
Carrying capacity
- D.
Natality
Correct Answer
C. Carrying capacity -
- 17.
The estimated size of the population of Homo sapiens on the planet earth has exceeded
- A.
2 billion
- B.
6 billion
- C.
10 billion
- D.
25 billion
Correct Answer
B. 6 billion -
- 18.
The characteristic survivorship curve for a k-selected species is
- A.
A type I or type II survivorship curve
- B.
A type I or type III survivorship curve
- C.
A type III survivorship curve only
- D.
A type I, type II or type III survivorship curve
Correct Answer
A. A type I or type II survivorship curve -
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Current Version
-
Jan 17, 2013Quiz Edited by
ProProfs Editorial Team -
Aug 12, 2010Quiz Created by
Dlee7283
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