Honors Biology Final Exam Review-Questions with Correct
Answers/ Verified/ latest Version (2024/2025)
autotroph - ✔✔organism that can capture energy from sunlight or chemicals and use it to
produce its own food from inorganic compounds; also called a producer
biosphere - ✔✔part of Earth in which life exists including land, water, and air or atmosphere
community - ✔✔assemblage of different populations that live together in a defined area
consumer - ✔✔organism that relies on other organisms for its energy and food supply; also
called a heterotroph
ecology - ✔✔scientific study of interactions among organisms and between organisms and
their environment
ecosystem - ✔✔collection of all the organisms that live in a particular place, together with
their nonliving environment
food chain - ✔✔series of steps in an ecosystem in which organisms transfer energy by
eating and being eaten
food web - ✔✔network of complex interactions formed by the feeding relationships among
the various organisms in an ecosystem
heterotroph - ✔✔organism that obtains energy from the foods it consumes; also called a
consumer
population - ✔✔group of individuals of the same species that live in the same area
producer - ✔✔organism that can capture energy from sunlight or chemicals and use it to
produce food from inorganic compounds; also called an autotroph
,species - ✔✔group of similar organisms that can breed and produce fertile offspring
trophic level - ✔✔step in a food chain or food web
abiotic factors - ✔✔physical, or nonliving, factor that shapes an ecosystem
biotic factors - ✔✔biological influence on organisms within an ecosystem
commensalisms - ✔✔symbiotic relationship in which one member of the association
benefits and the other is neither helped nor harmed
mutalism - ✔✔symbiotic relationship in which both species benefit from the relationship
niche - ✔✔full range of physical and biological conditions in which an organism lives and the
way in which the organism uses those conditions
predation - ✔✔interaction in which one organism captures and feeds on another organism
parasitism - ✔✔symbiotic relationship in which one organism lives in or on another
organism (the host) and consequently harms it
pioneer species - ✔✔first species to populate an area during primary succession
primary succession - ✔✔succession that occurs on surfaces where no soil exists
symbiosis - ✔✔relationship in which two species live closely together
carrying capacity - ✔✔largest number of individuals of a population that a given
environment can support
, emigration - ✔✔movement of individuals out of an area
exponential growth - ✔✔growth pattern in which the individuals in a population reproduce
at a constant rate
immigration - ✔✔movement of individuals into an area occupied by an existing population
logistic growth - ✔✔growth pattern in which a population's growth rate slows or stops
following a period of exponential growth
population density - ✔✔number of individuals per unit of area
gene pool - ✔✔combined genetic information of all the members of a particular population
genetic drift - ✔✔random change in allele frequencies that occurs in small populations
genetic equilibrium - ✔✔situation in which allele frequencies remain constant
speciation - ✔✔formation of new species
acid rain - ✔✔rain containing nitric and sulfuric acids
biodiversity - ✔✔biological diversity; the sum total of the variety of organisms in the
biosphere
biological magnification - ✔✔increasing concentration of a harmful substance in organisms
at higher trophic levels in a food chain or food web
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