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ASU BIO 182 EXAM 4 FINAL EXAM NEWEST
2024-2025 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 3 / 4
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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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