Plant defences Flashcards
what are 4 examples of physical barriers in plants
bark
thich waxy cuticles
spikes/thorns
cellulose cell walls
what are chemical defences in plants
poisons in cells
what is aspirin made out of
willow tree
what are 3 example uses of plant medicines
to treat malaria
to treat heart disease
to relieve symptoms
what are the 3 ways to identify and detect
visible symptoms
distribution analysis
laboratory testing
what are some visible symptoms to look out for when identifying a plant disease
change in normal appearance
overgrowth in parts of plants
death of parts
under-development
what is distribution analysis
looking at the way plants are spread in the environment to identify possible causes of the disease
what 4 things do you check when using distribution analysis
how many plants are affected
where the diseased plants are
is it species-specific
do the symptoms change over time
what is laboratory testing
using different scientific techniques to identify a disease
what are 5 tests in laboratory testing
microscopic examination
antibodies
genetic testing
soil sample
grow pathogens on nutrient medium
how is microscopic examination useful
can be used to examine plant material for signs of pathogens
how is antibodies useful
can be used to test for the presence of pathogens
how is genetic testing useful?
identify any of the pathogens that are found
how is soil sample useful
testing to rule out soil factors such as nutrient deficiency
how is growing pathogens useful for identifying disease
pathogens can be grown on a nutrient medium to produce a large sample for identification
