BIO 215 - Exam 2 - Study Guide UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Community Ecology - CORRECT ANSWER - study of the organization and functioning
of communities within a particular habitat
Interference vs. Resource Competition - CORRECT ANSWER - (1) Interference: direct
aggression between individuals
(2) Resource: indirect competition
Intraspecific vs. Interspecific Competition - CORRECT ANSWER - Intra - competition
within a species
Inter - competition between species
Self Thinning - CORRECT ANSWER - is species shrinking, appears to be result of
infraspecific competition or limited resources
-1/2 - CORRECT ANSWER - As individuals age the biomass decreases
-3/2 - CORRECT ANSWER - average weight vs. density
N-dimensionl niche hypervolume - CORRECT ANSWER - the dimensions of an
environment (conditions and resources) that define requirements of individuals/or species to
carry on life
Competitive Exclusion Principle - CORRECT ANSWER - no two species can occupy the
same niche
GF Gause
, Lotka-Volterra - CORRECT ANSWER - represents the population growth for two species,
looks at interspecific (if dominant, alpha is greater than one, one species will die) and
intraspecific (if dominant, alpha is less than one, species can coexist)
Character Displacement - CORRECT ANSWER - shift in morphology, behavior and
biochemistry to reduce niche overlap
What are the 7 criteria for character displacement - CORRECT ANSWER - (1) must be
statistical differences in characteristic of interest
(2) genetic basis
(3) morphological differences must be greater in sympatric
(4) cannot be due to founder effect
(5) measurable effect on fitness
(6) competition for a resource must be present/demonstrated and linked directly to the trait
(7) characteristic differences cannot be due to differences in resource richness
Predator vs. Prey (definiton) - CORRECT ANSWER - Predator - an organism that kills
and eats another
Prey - an animal that is hunted and killed for food
How many species exist and how many interactions are there? - CORRECT ANSWER -
10 million and 500 million
What are the pros can cons of introducing an exotic species to help control another exotic species
- CORRECT ANSWER - Pro: you will be able to control the population
Con: you introducing more invasive species that you are unsure of how they will effect the
community
Release from Exploitation - CORRECT ANSWER - use of an exotic species to control the
exploding exotic species (prickly pear in australia being controlled with the American moth)
ACTUAL Exam Questions and CORRECT
Answers
Community Ecology - CORRECT ANSWER - study of the organization and functioning
of communities within a particular habitat
Interference vs. Resource Competition - CORRECT ANSWER - (1) Interference: direct
aggression between individuals
(2) Resource: indirect competition
Intraspecific vs. Interspecific Competition - CORRECT ANSWER - Intra - competition
within a species
Inter - competition between species
Self Thinning - CORRECT ANSWER - is species shrinking, appears to be result of
infraspecific competition or limited resources
-1/2 - CORRECT ANSWER - As individuals age the biomass decreases
-3/2 - CORRECT ANSWER - average weight vs. density
N-dimensionl niche hypervolume - CORRECT ANSWER - the dimensions of an
environment (conditions and resources) that define requirements of individuals/or species to
carry on life
Competitive Exclusion Principle - CORRECT ANSWER - no two species can occupy the
same niche
GF Gause
, Lotka-Volterra - CORRECT ANSWER - represents the population growth for two species,
looks at interspecific (if dominant, alpha is greater than one, one species will die) and
intraspecific (if dominant, alpha is less than one, species can coexist)
Character Displacement - CORRECT ANSWER - shift in morphology, behavior and
biochemistry to reduce niche overlap
What are the 7 criteria for character displacement - CORRECT ANSWER - (1) must be
statistical differences in characteristic of interest
(2) genetic basis
(3) morphological differences must be greater in sympatric
(4) cannot be due to founder effect
(5) measurable effect on fitness
(6) competition for a resource must be present/demonstrated and linked directly to the trait
(7) characteristic differences cannot be due to differences in resource richness
Predator vs. Prey (definiton) - CORRECT ANSWER - Predator - an organism that kills
and eats another
Prey - an animal that is hunted and killed for food
How many species exist and how many interactions are there? - CORRECT ANSWER -
10 million and 500 million
What are the pros can cons of introducing an exotic species to help control another exotic species
- CORRECT ANSWER - Pro: you will be able to control the population
Con: you introducing more invasive species that you are unsure of how they will effect the
community
Release from Exploitation - CORRECT ANSWER - use of an exotic species to control the
exploding exotic species (prickly pear in australia being controlled with the American moth)
