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18 Cards in this Set
- Front
- Back
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plants respons to what type of factors
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abiotic and biotic
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whats it called when a chemical compound secreted by the roots of one plant block the germination of nearby seeds or inhibits the growth of a neighboring plant
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allelopathy--- a plant posioning another plant
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describe the ant accacia symbiosis
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the acaccia provides sugar for ant and ant protects tree
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describe paristoid wasp symbiosis
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plant releases chemical due to caterpillar eating it, the wasp gets the chemical signal and lays eggs on caterpillar, eggs hatch and larvae eat caterpillar
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what does a wound rsponse do
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protects plant from herbivores
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outline wound response
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its an induced production of proteniase inhibitors that hurt the herbivores digestive system
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what are two acids involved with wound response to herbivores
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jasmonic and salicylic acid
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defense responses can be _____-specific
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pathogen
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describe a avirulent pathogen and gene-for-gene hypothesis
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its a pathogen that lets its host know its there by releasing something into it and binding to the plants R gene which allows it to mount defenses and doesnt cause much harm to it
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what does the hypersensitive response do
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lead to rapid cell death around the source of the invasion and also to a longer terrm whole plant resistance
(seals off infection to limit damage) |
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what is systamic acquired resistance
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a temporary broad form of resistnace that may be induced by exposure to a pathogen
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what is phototropism
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directional growth in response to light and is controlled by a blue-light receptor
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what is gravitropism
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the response of a plant to the gravitational field
basically if you know a plant over it will start growing straight up again |
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what is thigmotropism
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a directional growth of a plant/part, in response to contact with an object, animal, other plant or even wind.
(ivy growing up a wall) |
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what process is it when plants permanently change form in response to mechanical stress
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thigmomorphogenesis
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whats the difference b/w a tropism and a plant-movement
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tropism is an irreversible growth response, plant movements are reversible is based on changes in turgor pressure
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what does the hormone auxin do
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allows elongation and organizes the body plan
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hormones function via signal transduction using what two things
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kinases and transcription factors
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