BIO 320 Exam 1 Practice Questions and
Answers (100% Pass)
Biodiversity is built from what 3 features? - Answer️️ -Ecosystem
diversity, species diversity, genetic diversity
Species that lack genetic diversity are? - Answer️️ -More
vulnerable to fluctuations due to climate change, diseas...
STONY BROOK UNIVERSITY & ARIZONA UNIVERSITY
Estimated number of species in a community... - Answer✔️✔️-
Increases with an increase in the number of species represented by
a single individual and decreases with an increase in the number of
species represented by 2 individuals
Relative Abundance - Answer✔️✔️-The proportion of individuals in a
community represented by each species
True or false; most species have a hight or low abundance? -
Answer✔️✔️-False. Most species have intermediate abundance
Frank Preston - Answer✔️✔️-Developed a way to visualize patterns of
variation in abundance of different species.
Log-normal Distribution - Answer✔️✔️-A bell-shaped curve that uses
a logarithmic scale of the x-axis
True or false; log-normal distributions of species can be found
across a wide variety of communities and taxonomic groups -
Answer✔️✔️-True
Rank-abundance curves - Answer✔️✔️-Plot the relative abundance of
each species in a community in rank order from most abundant to
least abundant
Rank-abundance curves are useful in? - Answer✔️✔️-Illustrating how
communities differ in species richness and species evenness
Species Evenness - Answer✔️✔️-Comparison of the relative
abundance of each species in a community
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