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23 Cards in this Set

  • Front
  • Back
Arms Race
Relationship between organisms that exhibit coevolution and escalation.
Nest parasites
Birds who lay eggs in other birds' nests in the hopes that the host bird will rear their offspring.
Asymmetrical selection
= life-dinner principle. Expect prey to be a couple of steps ahead of the predator (or host->parasite).
Intraspecific competition
Competition between members of the same species. Stronger than interspecific.
Interspecific competition
Competition between members of different species.
Exploitation competition
Draw resources faster than the competitor can.
Interference competition
Fight or hide a resource from a competitor.
Ideal Free Distribution. If organisms are ideal (know the quality of all potential habitats), free to choose between them (no despots), they will distribute themselves in such a way that each member has the same amount of resources.
A spatial subset of habitat that is treated as a single homogeneous unit.
A spatially bounded area, with a subset of physical and biotic conditions, within which the density of interacting individuals, and at least one of the parameters of population growth is different than in adjacent habitats.
Habitat selection
Process by which individuals preferentially use a non-random subset of available habitats.
Home Range
Area where animal spends bulk of its time. No overlap if the animals are territorial.
Dilution Effect
With more people in a group, less change of being the one who is eaten.
Female mates with more than 2 males.
Ideal Despotic Distribution. Usually a despot present that prevents organisms' freedom (IFD), but the organisms are still ideal. Good competitors tend to inhabit good habitats.
Gametes have evolved to be different sizes.
Intersexual selection
Doing something enticing to attract the opposite sex.
Intrasexual selection
Compete with those of the same sex for mate.
Sexual selection
Arises from the advantages that certain individuals have other others of the same sex and species in exclusive to reproduction.
Runaway selection
Sexual selection operates on a preferred trait. Stops when predation risk increases; sexual selection and natural selection oppose one another.
Classic female choice
Pre-insemination: e.g. courtship (helps keep from mating with wrong species, determine fitness of potential mate)
Cryptic female choice
Post-insemination. Predominant over classic female choice. Include physiological, morphological, behavioral, and genetic interventions.
War of Attrition
Display aggression (puffed chest stance). Could lose access to food or females, but not actual physical aggression.