Bio 206 final exam
(Latest 2025-2026 Edition) 100% Verified Q&A + Answer
35+
Key Solutions
VERIFIED ANSWERS
Question 1
A form of competition where individuals reduce the supply of a limiting resource (e.g., food or nutrients), indirectly affecting
others.
Correct Answer
Exploitative Competition.
Question 2
A direct interaction where individuals physically interfere with another's access to a resource, such as through aggression or
territoriality.
Correct Answer
Interference Competition
Question 3
The principle that two species competing for the exact same limiting resource cannot stably coexist; one will eventually drive
the other to extinction locally
Correct Answer
Competitive Exclusion.
Question 4
Defensive traits that are "always on" or permanently present in an organism, regardless of the presence of predators (e.g.,
cryptic coloration, shells, toxins)
Correct Answer
Constitutive Defenses.
Question 5
Defensive traits that are activated or produced only in response to a predator attack or presence (e.g., plants producing
toxins only after being eaten).
Correct Answer
Inducible Defenses.
Trusted by thousands of students and professionals worldwide Page 1 of 6
, Question 6
An interaction where one organism (the parasite) benefits at the expense of the other (the host), such as brood parasites
imposing costs on host birds.
Correct Answer
Parasitism (+/-).
Question 7
An interaction where one species benefits while the other is neither helped nor harmed.
Correct Answer
Commensalism (+/0).
Question 8
An interaction where both species derive a fitness benefit.
Correct Answer
Mutualism (+/+).
Question 9
An evolutionary strategy where an individual acts to increase the survival or reproduction of biological relatives, even at a
cost to its own survival.
Correct Answer
Kin Selection:
Question 10
The reciprocal evolutionary change between interacting species, such as predators and prey driving an "arms race" of
adaptations
Correct Answer
Coevolution
Question 11
The simple count of the number of different species present in a community
Correct Answer
Species Richness:
Question 12
A measure of how relative abundance is distributed among species; a community is more "even" if species are present in
similar proportions rather than dominated by one.
Correct Answer
Species Evenness:
Trusted by thousands of students and professionals worldwide Page 2 of 6
(Latest 2025-2026 Edition) 100% Verified Q&A + Answer
35+
Key Solutions
VERIFIED ANSWERS
Question 1
A form of competition where individuals reduce the supply of a limiting resource (e.g., food or nutrients), indirectly affecting
others.
Correct Answer
Exploitative Competition.
Question 2
A direct interaction where individuals physically interfere with another's access to a resource, such as through aggression or
territoriality.
Correct Answer
Interference Competition
Question 3
The principle that two species competing for the exact same limiting resource cannot stably coexist; one will eventually drive
the other to extinction locally
Correct Answer
Competitive Exclusion.
Question 4
Defensive traits that are "always on" or permanently present in an organism, regardless of the presence of predators (e.g.,
cryptic coloration, shells, toxins)
Correct Answer
Constitutive Defenses.
Question 5
Defensive traits that are activated or produced only in response to a predator attack or presence (e.g., plants producing
toxins only after being eaten).
Correct Answer
Inducible Defenses.
Trusted by thousands of students and professionals worldwide Page 1 of 6
, Question 6
An interaction where one organism (the parasite) benefits at the expense of the other (the host), such as brood parasites
imposing costs on host birds.
Correct Answer
Parasitism (+/-).
Question 7
An interaction where one species benefits while the other is neither helped nor harmed.
Correct Answer
Commensalism (+/0).
Question 8
An interaction where both species derive a fitness benefit.
Correct Answer
Mutualism (+/+).
Question 9
An evolutionary strategy where an individual acts to increase the survival or reproduction of biological relatives, even at a
cost to its own survival.
Correct Answer
Kin Selection:
Question 10
The reciprocal evolutionary change between interacting species, such as predators and prey driving an "arms race" of
adaptations
Correct Answer
Coevolution
Question 11
The simple count of the number of different species present in a community
Correct Answer
Species Richness:
Question 12
A measure of how relative abundance is distributed among species; a community is more "even" if species are present in
similar proportions rather than dominated by one.
Correct Answer
Species Evenness:
Trusted by thousands of students and professionals worldwide Page 2 of 6
