EXAM TEST BANK 2026/2027 PRACTICE QUESTIONS AND
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C. The two species have different beak sizes, but only when they occur
on the same island.
Two of Darwin's finches display a character displacement when they
occur as sympatric species. Which of the statements correctly
interprets the graph?
A. Both species have the same size beak on Santa Maria Island.
B. Both species have the same size beaks on Los Hermanos Island.
C. The two species have different beak sizes, but only when they occur
on the same island.
D. The two species feed on different food resources; one feeds on
seeds while the other feeds on insects.
What is the major difference between Batesian and Mullerian mimicry?
A. Only Batesian mimicry involves reciprocal adaptations
B. Only Mullerian mimicry involves reciprocal adaptations
C. All of the species that exhibit Mullerian mimicry are toxic; in Batesian
C. All of the species that exhibit Mullerian mimicry are toxic; in Batesian
,A species with relatively low numbers that interacts in critical ways with
many other elements of an ecosystem is called a ___ species.
A. predatory
B. keystone
C. primary
D. dominant
B. keystone
Cattle egrets follow cattle because cattle disturb insects as they walk,
making insects easier for the egrets to catch. There is no cost or
benefit to the cattle from this ______________________ interaction
A. competitive
B. predator-prey
C. mutualistic
D. commensal
D. commensal
,A volcano in Hawaii has erupted and completely covered a small island
with lava. Following this disturbance, what process is likely to proceed?
A. Secondary succession
B. Tertiary succession
C. Primary succession
D. Heterotrophic succession
C. Primary succession
A symbiotic relationship in which both organisms benefit is
A. Parasitism
B. Mutualism
C. Commensalism
D. Tolerance
B. Mutualism
A bird eats the fruit of a plant species. The seeds are not digested and
germinate in the bird's excrement at some distance from the parent
plant. This is an example of
A. predation
B. competition
C. commensalism
D. mutualism
D. mutualism
, Some African woodpeckers specialize in removing and eating parasitic
ticks from bodies of large herbivores. The relationship between birds
and ticks is
A. Mutualism
B. Predation
C. Commensalism
D. Parasitism
B. Predation
A small group of mice were released on an island. The island previously
had no mice on it, but had abundant food and no predators. After
several years of growth, the size of the new island population stabilizes.
However, at this point a hurricane drastically reduces the population.
How would you describe the situation?
A. The biotic potential of the population has been reduced. B. The new
population size is a result of density-dependent regulation.
C. The new population size is a result of density-independent
regulation.
D. The island mouse population can now act as a sink metapopulation.
C. The new population size is a result of density-independent
regulation.