section 1 Flashcards
biodiversity
3 types of biodiversity?
variety of life on earth
ecosystem, community, species
ecosystem diversity
difference in biotic (living) and abiotic (nonliving) things in an ecosystem
community diversity
unique groupings of species within ecosystems
species diversity
members of same species can be genetically different
where is there more biodiversity? why?
equator; warmer climate supports biodiversity
how to class organisms? how are scientific names written
Kingdom
Phylum
Class
Order
Family
Genus
Species
king phillip comes over for great speghetti
written GENUS SPECIES
species
organism with same basic stucture
deer
population
group of one species in same ecosystem
herd of deer
community
diff things that live together in ecosystem
bears, deer, etc
ecosystem
where biotic and abiotic things interact
deer, bear, rocks, water, grass, wolves, etc
interdependence
organisms rely on one another to survive
predator/prey relationships
affect each others population numbers
symbiosis
relationship between 2 diff. organisms/species
mutualism
both species benefit
acacia tree (protection) + acacia ant (home)
commensalism
one organisms benefits, other is unaffected
barnacles (food+transport) + whales (unaffected)
parasitism
one organism benefits, other is harmed
fleas (nutrients) + dogs (weakened)
niche
4 parts?
role of organism in an ecosystem
predator
prey
habitat (roaming + nesting)
how it interacts
interspecies competition
2+ species compete for same resources
resource partitioning
division of limited resources to avoid interspecies competition for them
generalist niche
broad
can live in wide variety of areas
ex. coyotes can live in mountains, urban, desert, praires
specialist niche
specific niche
needs specific environment to live
ex. pandas eat 95% bamboo
variation
any difference from individual/group of organisms of any species
increases chance of survival - become resistant to threats
natural selection
organisms more adapted to their environment -more likely to survive and pass on successful genes
causes species to change over time [evolution]