BIO-182 EXAM 5 (2026) WITH
VERIFIED AND ACCURATE
ANSWERS GRADED A+
competitive exclusion principle - answer-local elimination of competing species
ecological niche - answer-the total of a species' use of biotic and abiotic resources
fundamental niche - answer-is the niche potentially occupied by the species
realized niche - answer-is the niche actually occupied by the species
cryptic coloration - answer-camouflage, makes prey difficult to spot
aposematic coloration - answer-animals with effective chemical defense often exhibit
bright warning coloration
batesian mimicry - answer-a palatable or harmless species mimics an unpalatable or
harmful model
relative abundance - answer-is the proportion each species represents of the total
individuals in the community
species richness - answer-is the total number of different species in the community
energetic hypothesis - answer-suggests that length is limited by inefficient energy
transfer
, dynamic stability hypothesis - answer-proposes that long food chains are less stable
than short ones
dominant species - answer-species that are those that are most abundant or have the
highest biomass
keystone species - answer-exert strong control on a community by their ecological
roles, or niche
facilitators - answer-(+/+) or (+/0), describes an interaction where one species can have
positive effects on another species without direct or intimate contact
ecosystem engineers - answer-foundation species, cause physical changes in the
environment that affect community structure
competition - answer-(-/-) occurs when a species compete for a resource in short
supply
predation - answer-(+/-) refers to interaction where one species, the predator, kills and
eats the other, the prey
herbivory - answer-(+/-) refers to an interaction in which an herbivore eats parts of a
plant or algae
parasitism - answer-(+/-) one organism, the parasite, derives nourishment from another
organism, its host, which is harmed in the process
mutualism - answer-(+/+) is an interspecific interaction that benefits both species
commensalism - answer-(+/0) one species benefits and the other is neither harmed nor
helped
VERIFIED AND ACCURATE
ANSWERS GRADED A+
competitive exclusion principle - answer-local elimination of competing species
ecological niche - answer-the total of a species' use of biotic and abiotic resources
fundamental niche - answer-is the niche potentially occupied by the species
realized niche - answer-is the niche actually occupied by the species
cryptic coloration - answer-camouflage, makes prey difficult to spot
aposematic coloration - answer-animals with effective chemical defense often exhibit
bright warning coloration
batesian mimicry - answer-a palatable or harmless species mimics an unpalatable or
harmful model
relative abundance - answer-is the proportion each species represents of the total
individuals in the community
species richness - answer-is the total number of different species in the community
energetic hypothesis - answer-suggests that length is limited by inefficient energy
transfer
, dynamic stability hypothesis - answer-proposes that long food chains are less stable
than short ones
dominant species - answer-species that are those that are most abundant or have the
highest biomass
keystone species - answer-exert strong control on a community by their ecological
roles, or niche
facilitators - answer-(+/+) or (+/0), describes an interaction where one species can have
positive effects on another species without direct or intimate contact
ecosystem engineers - answer-foundation species, cause physical changes in the
environment that affect community structure
competition - answer-(-/-) occurs when a species compete for a resource in short
supply
predation - answer-(+/-) refers to interaction where one species, the predator, kills and
eats the other, the prey
herbivory - answer-(+/-) refers to an interaction in which an herbivore eats parts of a
plant or algae
parasitism - answer-(+/-) one organism, the parasite, derives nourishment from another
organism, its host, which is harmed in the process
mutualism - answer-(+/+) is an interspecific interaction that benefits both species
commensalism - answer-(+/0) one species benefits and the other is neither harmed nor
helped
