concepts 2 Flashcards
(31 cards)
symbiosis
close relationship btwn 2 organisms in diff species
3 types of symbiosis
mutualism
commensalism
parasitism
mutualism
+,+
commensalism
+,0
parasitism
+,-
intraspecific competition
within 1 species
interspecific competition
between diff species
mimicry
similarity of one species to another that can benefit both
batesian mimicry
example: non venomous snake looks like a venomous one
mullerian mimicry
example: two venomous stuff look like each other
endangered species
in danger of extinction
habitat vs niche
niche= behavior/ trophic levels/where organism belongs in the ecosystem habitat= where it lives
niche partitioning
2 competing species utilize diff resources to avoid competition. (so their not in the same niche)
ecological equivalents
species that occupy the same niches but not in the same region so they don’t have to compete
predation
where 1 organism captures/ kills/ eats another
prey includes
plants
succession
the sequence of biotic changes that regenerate a caged community or create a community in a previously uninhabited area
primary succession
est. and development of an area that was previously uninhabited
not even soil
just barren rock
pioneer species
the first species to inhabit in succession
secondary succession
reestablishment of a damaged area where soil was left intact
exponential growth
pop increase rapidly
with abundant resources
logistic growth
pop increase slowly once carrying capacity is reached
limited resouces
survivorship curves
show how many organisms are still alive as the pop ages
type 1 survuvorship surve
late loss curve
large animsld with parental care
live to old age
exponenetial increase