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BIOLOGY TEST A
ECOLOGY
NAME___________________________
Matching: In the space provided, write the letter of the description that’s best
matches the term or phrase
________ 1. competition
A. the functional role of a particular species
in an ecosystem
________ 2. niche
B. the entire range of conditions an
organism is potentially able to occupy
________ 3. fundamental niche
C. biological interactions in which two
species use the same resources
________ 4. realized niche
D. the part of a fundamental niche that a
species occupies
In the space provided, write the letter of the term or phrase that best completes each
statement or best answers the question.
________ 5. The growth exhibited by a colony of bacteria that has a limited food supply
will most likely be
A. Exponential
C. Natural
B. Logistic
D. Random
________ 6. Natural selection acts on
A. Genotypes
B. Phenotypes
C. both phenotypes and genotypes
D. neither phenotypes or genotypes
________ 7. The plants that first grow on an island formed by a volcano are part of a
progression called
A. primary succession
C. secondary succession
B. primary productivity
D. the climax community
________ 8. Each of the following is an abiotic factor except
A. plant life
C. soil type
B. rainfall
D. temperature
________ 9. A symbiosis in which both species benefit is
A. commensalism
C. predation
B. mutualism
D. parasitism
________ 10. An organism’s niche is
A. the way the organism uses the range of physical and biological
conditions in which it lives
B. all the physical and biological factors in the organism’s environment
C. the range of temperatures that the organisms need to survive
D. a full description of the place and organism lives
________ 11. Genetic drift tends to occur in populations that
A. are very large
C. are formed from new species
B. are small
D. have unchanging allele
frequencies
Fill in the following table: with K-strategist conditions in the right side of the table
Growth Strategies
Graph
Growth
(type of graph)
Reproduction and offspring
Example of an K-strategist organism
Draw a graph of K-strategist :
Short Answer: please write your answer in the space provided:
12. Describe wetland ecosystems:
(Description/ types of wetlands, characteristics (soil properties and anything else you can
remember from class)
13. Why are wetland ecosystems important? (Include why they are important habitats)
14. What is meant by the term Keystone Species? Describe why in the Wolves of
Yellowstone article we called wolves a keystone species.
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