Shared Flashcard Set

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39
control systems in plants
20
Plant Sciences
Not Applicable
05/06/2005

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Cards

Term
phototropism
Definition
growth of shoot toward a light
Term
auxin
Definition
stimulates stem elongation, root growht, differentiation, branching, development of fruit.
Term
cytokinis
Definition
affect root growth and differentiaiton, stimulate division and growth, germination delay senescence
Term
gibberellins
Definition
prmote seed and bud germination, stem elongation adn leaf growth, stimulate flowering and development of fruit, affect root growth and differentiation
Term
abscisic acid
Definition
inhibits growt, closes stomata during water stress, counteracts braking of dormancy
Term
ethylene
Definition
fruit ripening, opposes auxin effects
Term
brassinostreoids
Definition
required for normal growth and development
Term
tropism
Definition
growth responses that result in the curvatures of whoel plant toward or away from stimuli
Term
gravitropism
Definition
response of gravity
Term
statiliths
Definition
specializes plastids containing dense starch grains
Term
thigmotropisms
Definition
dirrectional growth in response to touch
Term
thigmomorphogenesis
Definition
developmental response to mechanical perturbaiton
Term
sleep movements
Definition
powerd by daily changes in the turgor pressure of motor cells
Term
circadian rythm
Definition
physiological cycle of 24 hrs
Term
shortday plant
Definition
requires shorter lgiht period
long night plant
Term
long day plants
Definition
flower only when lgiht period is long
short night plants
Term
phytochromes
Definition
pigments that help measure the legnth of darkness
Term
gene for gene recognition
Definition
speicfic resistance to disease
Term
phytoalexins
Definition
antimicrobial compounds
Term
PR proteins
Definition
antimicrobila or signaling
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