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Bio 121 Final Exam Review Questions and Answers
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Bio 121: Final Exam Review Questionsand Answers
evolution - Correct Answers -change overtime
biological evolution - Correct Answers -consists of genetic change in populations of
organisms across generations
the two naturalists from England who established the idea of natural selection - Correct
Answers -1. Alfred Russell Wallace
2.Charles Darwin
where Alfred studied natural selection - Correct Answers -Archipelago
where Charles Darwin studied natural selection - Correct Answers -on his voyage of
HMS Beagle
HMS Beagle - Correct Answers -Charles Darwins book published that explained his
belief of natural selection
conservation biology - Correct Answers -scientific discipline devoted to understanding
the factors that influence the loss/protection/restoration of biological diversity
conservation biologists - Correct Answers -biologists that integrate understanding of
evolution and extinction with ecology
methods conservations biologists use to study human impact - Correct Answers -field
data, theories, and experiments
endangered species act - Correct Answers -successfully saved many species and held
populations steady
methods to protect biodiversity - Correct Answers -1.protecting umbrella species
2.protecting parks and reserves fro human impact
Natural Selection - Correct Answers -process by which inherited characteristics
enhance survival reproduction
3 premises of natural selection - Correct Answers -1. organisms face a constant
struggle to survive and reproduce
2. organisms tend to produce more offspring than can survive
, 3. individuals of a species vary in their characteristics
adaptive traits - Correct Answers -genes are passed to offspring and those of better
adapted parents will succeed because they will better adapt through time
adaption - Correct Answers -trait that promotes success
artificial selection - Correct Answers -selection conducted under human direction
examples of artificial selection - Correct Answers -1.dog breeding
2.plant breeding (broccoli, cauliflower, brussel sprouts)
speciation - Correct Answers -process in which new species are generated
allopatric speciation - Correct Answers -species formation due to physical separation of
populations over geographic distance
how allopatric speciation works - Correct Answers -other DNA combines with other
species and mutations begin to form
Phylogenetic Trees - Correct Answers -depict relationships among species, major
groups of species, populations, or genes
Extinction - Correct Answers -the disappearance of a species from earth
why extinction is a natural process - Correct Answers -when conditions naturally change
and a species does not have enough time to adapt and work with the change
example of extinction as a natural process - Correct Answers -rise&fall of sea level,
arrival of new species, severe weather events
mass extinction events - Correct Answers -massive disappearance of species at once
what mass extinction our world is in currently - Correct Answers -6th mass extinction
event due to human impact
ecology - Correct Answers -study of interactions among organisms and between
organisms and their environment
ecological levels of organization - Correct Answers -1. biosphere
2. ecosystem
3. community
4. population
5. organism
key concepts of ecology - Correct Answers -1.habitat
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