BIO 320 FINAL EXAM
What determines if a species can become a member of a
community> How do abiotic and biotic filtering affect species
sorting? - CORRECT REPLY>>>>>>-1. Adaptations of species
to environmental conditions
2. Persistence in the face of competitors, predators, and
parasites
3. Stochastic (random) Extinction
Abiotic: environmental filters eliminate species that cannot
tolerate conditions
Biotic: within a community, close relative species will be
excluded by competition
How might environmental filtering and competition be
related to the evolutionary history of species? - CORRECT
REPLY>>>>>>-Environmental filtering and competition have
opposing effects on community composition.
Environmental leads to phylogenetic clustering which creates
clusters of species with similar traits
, Competition leads to phylogenetic over-dispersion in which
co-existing species should be less similar because
competition is pushing them into separate niches.
Why can a niche have more than two dimensions when
visualized by a hypervolume? - CORRECT REPLY>>>>>>-
Dimensions are way to categorize community niches.
Therefore there are as many dimensions as traits you could
think of.
ex: soil type, climate, plant type, etc.
What are the differences between a fundamental and
realized niche? - CORRECT REPLY>>>>>>-Fundamental
(hypothetical): total range of the physical, chemical, and
biological factors a species can utilize or survive in if there are
no other species affecting it.
Realized (actual): the portion of the fundamental niche the
species actually uses.
How does adaptive radiation of Darwins finches relate to
niches? - CORRECT REPLY>>>>>>-Adaptive Radiation:
divergence out from a central point in a particular evolution
What determines if a species can become a member of a
community> How do abiotic and biotic filtering affect species
sorting? - CORRECT REPLY>>>>>>-1. Adaptations of species
to environmental conditions
2. Persistence in the face of competitors, predators, and
parasites
3. Stochastic (random) Extinction
Abiotic: environmental filters eliminate species that cannot
tolerate conditions
Biotic: within a community, close relative species will be
excluded by competition
How might environmental filtering and competition be
related to the evolutionary history of species? - CORRECT
REPLY>>>>>>-Environmental filtering and competition have
opposing effects on community composition.
Environmental leads to phylogenetic clustering which creates
clusters of species with similar traits
, Competition leads to phylogenetic over-dispersion in which
co-existing species should be less similar because
competition is pushing them into separate niches.
Why can a niche have more than two dimensions when
visualized by a hypervolume? - CORRECT REPLY>>>>>>-
Dimensions are way to categorize community niches.
Therefore there are as many dimensions as traits you could
think of.
ex: soil type, climate, plant type, etc.
What are the differences between a fundamental and
realized niche? - CORRECT REPLY>>>>>>-Fundamental
(hypothetical): total range of the physical, chemical, and
biological factors a species can utilize or survive in if there are
no other species affecting it.
Realized (actual): the portion of the fundamental niche the
species actually uses.
How does adaptive radiation of Darwins finches relate to
niches? - CORRECT REPLY>>>>>>-Adaptive Radiation:
divergence out from a central point in a particular evolution
