BIOLOGY 109 EXAM #2 FROSTBURG
STATE UNIVERSITY QUESTIONS AND
ANSWERS
food web - ANSWER-A community of organisms where there are several interrelated
food chains
trophic pyramid - ANSWER-A representation of the distribution of biomass, numbers,
or energy among trophic levels
intraspecific competition - ANSWER-Competition among members of the same
species
keystone species - ANSWER-A species that influences the survival of many other
species in an ecosystem
brown food web - ANSWER-detritus based food web
first law of thermodynamics - ANSWER-Energy can be transferred and transformed,
but it cannot be created or destroyed.
second law of thermodynamics - ANSWER-Every energy transfer or transformation
increases the entropy of the universe.
species richness - ANSWER-the number of different species in a community
species evenness - ANSWER-relative abundance of each species
introduced species - ANSWER-species moved by humans to new geographic areas,
either intentionally or accidentally
invasive species - ANSWER-plants and animals that have migrated to places where
they are not native
evolutionary arms race - ANSWER-Predators and prey co-evolve adaptations for
prey capture and predator avoidance due to their strong evolutionary influence on
one another.
primary producers - ANSWER-the first producers of energy-rich compounds that are
later used by other organisms
primary consumer - ANSWER-An organism that eats producers
secondary consumer - ANSWER-An organism that eats primary consumers
STATE UNIVERSITY QUESTIONS AND
ANSWERS
food web - ANSWER-A community of organisms where there are several interrelated
food chains
trophic pyramid - ANSWER-A representation of the distribution of biomass, numbers,
or energy among trophic levels
intraspecific competition - ANSWER-Competition among members of the same
species
keystone species - ANSWER-A species that influences the survival of many other
species in an ecosystem
brown food web - ANSWER-detritus based food web
first law of thermodynamics - ANSWER-Energy can be transferred and transformed,
but it cannot be created or destroyed.
second law of thermodynamics - ANSWER-Every energy transfer or transformation
increases the entropy of the universe.
species richness - ANSWER-the number of different species in a community
species evenness - ANSWER-relative abundance of each species
introduced species - ANSWER-species moved by humans to new geographic areas,
either intentionally or accidentally
invasive species - ANSWER-plants and animals that have migrated to places where
they are not native
evolutionary arms race - ANSWER-Predators and prey co-evolve adaptations for
prey capture and predator avoidance due to their strong evolutionary influence on
one another.
primary producers - ANSWER-the first producers of energy-rich compounds that are
later used by other organisms
primary consumer - ANSWER-An organism that eats producers
secondary consumer - ANSWER-An organism that eats primary consumers
