BIO286 EXAM 2 VOCAB - Spring 2024
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Terms in this set (177)
Pattern of how organisms allocate time and energy
Life History among the various activities throughout its life that
affect survival, maturation, and reproduction
Longevity, growth rate, age at sexual maturation, age
at first reproduction, number of reproductive bouts
Life History Traits
per lifetime, number of offspring per reproductive
bout
periodic shedding of the cuticle in arthropods or the
Ecdysis
outer skin in reptiles (cicadas in lecture example)
A life stage of certain insects that is NOT sexually
Subimago
mature, comes before the imago stage.
Sexually mature version certain insects molt into after
the subimago stage; Imagos don't have well-
Imago
developed mouthparts, so their main goal is to breed
before they die.
Species that reproduce multiple times during their
Iteroparous
lives (ex: humans, dogs, frogs, etc)
Species that reproduce only once in their life, but may
Semelparous produce MANY offspring during that one time (ex:
mayflies, tussock moths)
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A survivorship pattern related to reproductive
patterns; often typical of organisms whose survival
Iteroparity chances increase once they reach maturity (type 1 or 2
survivorship, but iteroparous organisms may have type
3 survivorship curves as well)
A survivorship pattern related to reproductive
patterns; often typical of organisms with type 3
Semelparity
survivorship (high early life stage mortality), including
many fish, insects, all annual plants, etc
a synonym for 'evolutionary tree,' a hypothesized
diagram showing the history of divergence and
Phylogeny
change from single ancestral lineage to its
descendants,
used when constructing evolutionary trees; choice
among alternatives that require fewest number of
evolutionary changes; the least complex explanation
Parsimony to explain data. Also explains relationships among
organisms: similarities and differences (appearance,
function, DNA, proteins), tips of branches (different
species), and common ancestors (branch points)
those that are similar in different organisms because
Homologous characters they were derived from a common ancestor. Ex:
vertebrate forelimbs
traits that serve a similar function but have separate
Analogous characters evolutionary origins, a result of convergent evolution.
Ex: bird and bat wings.
similarity between species in certain traits that is
Convergent evolution caused by similar, but evolutionary independent,
responses to common environmental problems.
similarity in the characters found in different species
Homoplasy NOT inherited from a common ancestor. Ex: cacti and
euphorbs
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