intro to ecology notes Flashcards
what is ecology
the study of relationships between 2 organisms or between an organism and its environment
unicellular
one cell
multicellular
more than 1 cell
example of a unicellular
bacteria
example of multicellular
yourself
growth
becoming larger
reproduction
producing offspring
what are the two types of reproduction
sexual and asexual
sexual reproduction
mating between two organisms of the same species
asexual reproduction
offspring arise from a single parent
stimulus
a change in an organism’s environment “cause”
response
how an organism reacts to change in their environment “effect”
what is an organism
individual member of a species or population.
what is population
multiple individuals of the same species living together.
what is community
multiple populations of different species living together.
what is ecosystem
the same size as the community level, but takes into account the abiotic factors surrounding the community.
what is a biome
multiple ecosystems that share similar characteristics
what are some examples of biomes
grassland, tundra, rainforest, desert
what is an example of an organism
a deer
what is an example of population
deer in a field
example of community
birds, deer, plants, insects, squirrels
example of ecosystem
birds, plants, temperature, precipitation
what is the biosphere
a planet
biodiversity
the variety of organisms considered at all levels, from populations to ecosystem
true or false: Biodiversity has decreased over time
false
taxonomy
the study of describing, naming, and classifying organisms
what is binomial nomenclature
2-name naming system by Carolus Linnaeus that names organisms after their two most specific classification levels: Genus species
what are the two most specific classification levels
genus and specie
all life is organized into:
hint: there are 8
domain kingdom phylum class order family genus species
Cladograms and Dichotomous Keys
tools used to display relationships and classify organisms using their characteristics
