Unit 8 AP Bio

proximate cause

how something occurs physically mechanically

(ex. why do male peacocks have colorful feathers? because genes and hormones control feather growth and colors)

ultimate cause

why did this evolve to be this way?

(ex. why do male peacocks have colorful feathers? they attract mates and increase reproductive success

diurnal

awake or most active during the day

nocturnal

awake or most active at night

crepuscular

awake or most active at dawn or dusk

kinesis

change in the rate of movement or frequency of turns in response to a stimulus; random and not towards or away from the stimulus

phototaxis

movement in response to light

chemotaxis

movement in response to chemical signals

geotaxis

movement in response to gravity

phototropism

plants grow toward to away from light

photoperiodism

allows plants to grow depending on day length; plants flower only at certain times of year

altruism

selfless behavior

name ecological levels in order

species, population, community, ecosystem, biome, biosphere

endotherm vs ectotherm