Final Review Flashcards
step in a food chain
trophic level
all of the members of a particular species that live in an area
population
symbiotic relationship in which ones species benefits and the other is unaffected
commensalism
predictable changes that occur in a community over time
succession
movement of organisms out of a population
emigration
organisms with similar physical characteristics are thought to have descended from a
common ancestor
all of the genes of all members of a population
gene pool
type of selection in which both extreme forms of a trait are favored
diversifying
proportion of all species that have ever lived that are now extinct
99%
type of isolation in which species breed at different times
temporal
the current system of classification used to give species universally accepted names
binomial nomenclature
order of taxa from most general to most specific
kingdom, phylum, class, order, family, genus, species
term for round bacterial shape
cocci
three roles of bacteria in the emnvironment
photosynthesis, recycle nutrients, fix nitrogen
organism that causes ringworm
fungi
process used by bryophytes to obtain water
osmosis
two types of vascular tissue
xylem and phloem
part of the flower that produces pollen grains
anther
purpose of a flower’s petals
attract pollinators
part of the flower that holds the ovules
ovary