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BIO 320 Exam 1 Practice Questions and Answers (100% Pass)

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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...

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  • August 27, 2024
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©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM


STONY BROOK UNIVERSITY & ARIZONA UNIVERSITY
BIO 320 Exam 1 Practice Questions and
Answers (100% Pass)

Biodiversity is built from what 3 features? - Answer✔️✔️-Ecosystem
diversity, species diversity, genetic diversity

Species that lack genetic diversity are? - Answer✔️✔️-More
vulnerable to fluctuations due to climate change, disease, and
habitat fragmentation.

True or false; Counting every individual of a species is common -
Answer✔️✔️-False

True or false; Must sample an area to estimate how many species
are present? - Answer✔️✔️-True

True or false; One way to sample is by graphing the number of
species observed as sample size increases? - Answer✔️✔️-True

Species Accumulation Curve - Answer✔️✔️-Graph of the number of
species observed in relation to the number of individuals sampled

True or false; another way to estimate the number of species in an
area is based on the number of rare species detected. - Answer✔️✔️-
True

Formula for estimating number of species living in an area -
Answer✔️✔️-S= Sobs+f1(f1-1)/2(f2+1)



1

, ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM


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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