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BSC 108 Final Exam Yates
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BSC 108 Final Exam Yates
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Name: Score:148 Multiple choice questions
Term 1 of 148
Name 2 types of aquatic biomes. What is the salinity of each?
Freshwater biomes- salt concentration <1%
Marine biomes- salt concentration about 3%
Standing water- lakes and ponds
Flowing water - rivers and streams
"On the Origin of Species by Means of Natural Selection" published in 1859
Exponential growth model (upward curve) and logistic growth model (downward curve,
then plateaus)
Definition 2 of 148
Even though they occupy the same geographic area, these two species of garter snakes occupy
different habitats, preventing them from mating
Habitat differentiation
What is comparative embryology?
What is micro-evolution?
Example of habitat isolation
Term 3 of 148
What is an ecological niche?
the interactions between different species in a community
the physical space occupied by a species in an ecosystem
the process of species adapting to their environment over time
the sum total of a species' use of the biotic and abiotic resources in its environment
,Term 4 of 148
Animals that possess homologous structures probably __________
acquired the structures through convergent evolution
inherited the traits from different ancestors
share identical genetic material
evolved from the same ancestor
Term 5 of 148
What is comparative embryology?
Species evolve without geographic isolation,probably associated with a genetic barrier due
to a single mutational event, important in plants. "Genetic separation"
organisms can change over generations and individuals with certain heritable traits leave
more offspring than others
comparison of structures that appear during the development of different organisms
Comparative embryology of vertebrates support evolutionary theory
the number of individuals in a populations that the environment can just maintain with no
net increase or decrease
,Term 6 of 148
What is the age structure of a population? Why is it utilized?
Producers-> primary consumers-> secondary consumers-> tertiary consumers->
quarternary consumers
Producers: flower,phytoplankton
Primary consumers: herbivores,zooplankton
Secondary consumers: mice,fish
Tertiary consumers: snakes, sharks
Quarternary consumers: hawks, whales
organisms can change over generations and individuals with certain heritable traits leave
more offspring than others
two species so similar that they compete for the same limiting resources cannot coexist in
the same place. two outcomes: extinction of one species, or one species evolves to use
different resources
the proportion of individuals in different age groups, utilized because age structure of a
population can help us understand the history of a populations survival or reproductive
success and how it relates to environmental factors and its a useful tool for predicting
future changes in a population
Term 7 of 148
Which of the following are key factors for determining the biome of a specific region?
temperature and rainfall (climate)
temporal isolation
migrating to a different location
physiological, anatomical, and behavioral
, Term 8 of 148
The approach to evolution that involves the study of similar structures that appear during the
development of different organisms is known as the study of _____.
comparative embryology
molecular genetics
behavioral ecology
paleontology
Term 9 of 148
What is the rule of 72?
a group of individuals of a single species that occupies the same general area
If you take the average % population growth of a population and divide that into the
number 72, you will get the number of years it will take for that population to double
Population- number of members of a species in a particular area
community- sum of the populations inhabiting a particular area
ecosystem- all of the Biotic and abiotic factors in an area
biosphere- the global ecosystem; the entire portion of the earth is inhabited by life
invasive species, habitat destruction, overexplotation, community ecology
Term 10 of 148
What is stabilizing selection? What does the phenotypic graph look like compared to the original
population curve?
stretches the phenotypic curve of a population to be taller and thinner
maintains variations for a particular trait within a narrow range
organisms can change over generations and individuals with certain heritable traits leave
more offspring than others
Our technology has allowed us to keep increasing carrying capacity.
the number of individuals in a populations that the environment can just maintain with no
net increase or decrease
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