plant response Flashcards
define germination
growth of seed into a new plant
define dispersal
carrying of seed away from the parent plant
define dormancy
period of no growth
how does dormancy in seeds benefit the plant species
seeds germinate when conditions are suitable
two roles of water in germination
-soften the testa
-activate enzymes
two possible food stores in seeds
cotyledon and endosperm
define tropism
growth response to a stimulus
where are auxins produced
meristems
benefit to a plant being positively phototrophic
more light ~ more photosynthesis
two reasons why the action of auxin is similar to the action of hormones
chemical action and produced in one place acts in another
what’s an auxin
plant growth regulator
inhibitory function of auxin
apical dominance
uses of auxin
ripening of fruit and weed killars
define thigotropism
growth response to touch
define phototropism
growth response to unidirectional light
define hydrotopism
growth response to water
define geotropism
growth response to gravity
define chemotopism
growth response to chemicals
define growth regulator
chemical that controls the growth of a plant
define growth promoter
chemical that increases growth in plants
define growth inhibitor
chemical that reduces growth in plants
