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ASU BIO 182 EXAM 4 FINAL EXAM NEWEST
2026-2027 ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
How can an exotic species contribute to extinction? -
CORRECT ANSWER--An introduction of a new species, that
could possibly become an invasive species
-An exotic species could carry pathogens
What are phenology shifts? - CORRECT ANSWER-*Related to
global climate change*
-Timing of seasonal events
-Concern mismatch between organisms
What are geographic range shifts? - CORRECT ANSWER-
*Related to global climate change*
-Organisms move into climates to which they're adapted
-Concern for organisms in arctic and alpine regions (running out
of habitat)
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What are consequences of extinction? - CORRECT ANSWER--
Impacts productivity and stability, and biological communities
-Ecosystem services
-Could disrupt mutualisms
What is resource use efficiency? - CORRECT ANSWER--When
species diversity is high, more overall water is used and more
photosynthesis can occur
What is facilitation? - CORRECT ANSWER--Certain species
facilitate the growth of another species by providing them with
nutrients, partial shade, etc.
What is a food chain? - CORRECT ANSWER--Connects the
trophic levels in a particular ecosystem
-Describes how energy moves from one trophic level to another
What is the decomposer food chain? - CORRECT ANSWER--
Made up of species that eat the dead remains of organisms
What is the grazing food chain? - CORRECT ANSWER--
Composed of herbivores (primary consumers) and the organisms
that eat the herbivores (secondary consumers)
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What is a food web? - CORRECT ANSWER--Show the
complex interactions of organisms in a community
-Food chains are usually embedded into more complex food
webs
What is a keystone species? - CORRECT ANSWER--The
structure of a community can change dramatically if a single
species is removed from or added to the community
-Keystone species help stabilize other species in the ecosystem
What is trophic cascade? - CORRECT ANSWER--Series of
changes that occur when the abundance of one member of a
food web changes
-Adding or removing a predator effects the density/behavior of
their prey, which effects the next lower trophic level
What is bioprospecting? - CORRECT ANSWER--Assesses
different organisms as novel sources or drugs or ingredients in
consumer products
What are provisioning ecosystem services? - CORRECT
ANSWER--Provide raw materials for food, fuel, medicines, and
building materials
-Bioprospecting
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What are regulating ecosystem services? - CORRECT
ANSWER--Water purification, flood control, waste
decompostion
What are cultural ecosystem services? - CORRECT ANSWER--
People integrate nature into their lives, however that may be
-Ecotourism
What are supporting ecosystem services? - CORRECT
ANSWER--Provide support across categories
-Pollinated service of bees
What is a biodiversity hotspot? - CORRECT ANSWER--
Focusing on conservation efforts
-Areas in most urgent need of conservation action due to
widespread destruction of habitat
-Areas where efforts to preserve habitat would have the highest
return on investment
-Areas of high species richness
-Areas with high proportion of endemic species (species found
in a particular area and nowhere else)
-There are 34 hotspots
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