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
purpose of the seed coat
tough outer layer for protection
four groups of gymnosperms
cycads, conifers, gnetophytes, ginkoes
type of plant that produces seeds in ovaries
angiosperm
part of a plant’s leaf where photosynthesis occurs
meosphyll
early growth stage of a plant
germination
period where the embryo of a seed is alive but not growing
dormancy
plant response that causes shoots to grow up and roots to grow down
gravitropism
circular or round symmetry
radial
symmetry with right and left sides
bilateral
most important function of the skin
protection
what swollen lymph nodes indicate
infection
type of blood cells that contain hemoglobin
red
organ that transports food from the pharynx to the stomach
esophagus
where fertilization takes place
fallopian tube
term for a fertilized egg
zygote
body’s most important nonspecific defense
skin
cells targeted by HIV
helper t cells
system of the body immediately affected by alcohol
nervous
difference between a producer and a consumer
producer is able to make its own food through photosynthesis or chemosynthesis
all members of a population are also members of the same
species
difference between a community and a population
community consists of many populations
symbiotic relationship in which one species benefits and the other is harmed
parasitism
a living factor
biotic
type of selection in which one extreme form of a trait is favored
directional
the two parts of a scientific name
genus and species
substance that makes up cell walls of fungi
chitin
how fungi get their food
absorption
function of fungi in the environment
break down dead organisms
type of vascular tissue that conducts water
xylem
a plant that lives for one year
annual
