Choose the most appropriate answer for each.
-Competitive exclusion
A)Blending in and being hidden by the background
B)Relative abundance of each species
C)One organism benefits at another organism's expense
D)Opportunistic colonizers of a newly vacated habitat
E)Lichens on newly hardened, newly cooled lava
F)Number of species in a community
G)Symbiotic interaction that minimizes the costs and maximizes the benefits for both partners
H)One species is eliminated from an area of niche overlap
I)Tasty species resembles repugnant one
J)The process that leads from a pioneer community to a mature community
K)Natural reforestation of burned-over forest

Question

Quizplus · Accepted Answer

Competitive exclusion is when one species is eliminated from an area of niche overlap.

Answer: B
 Relative abundance of each species is a factor in competitive exclusion, as the more abundant species may outcompete the less abundant species.

Answer: D
 Opportunistic colonizers of a newly vacated habitat may be able to thrive without competition, but this is not necessarily an example of competitive exclusion.

Answer: I
 Resembling a repugnant species may allow a tasty species to avoid predation or competition, but this is not an example of competitive exclusion.

Answer: A, E, K
 Blending in and being hidden by the background, lichens on newly hardened, newly cooled lava, and natural reforestation of a burned-over forest are not examples of competitive exclusion.

Answer: G
 A symbiotic interaction that minimizes the costs and maximizes the benefits for both partners is an example of mutualism, not competitive exclusion.

Answer: F
 The number of species in a community is a factor in community structure, but not directly related to competitive exclusion.

Answer: J
 The process that leads from a pioneer community to a mature community is known as succession, but is not specifically related to competitive exclusion.

Choose the Most Appropriate Answer for Each