18 Questions
What is considered a good indicator of ozone effects in trees?
Chlorophyll fluorescence
Which physiological change in trees was more pronounced due to ozone injury?
Net photosynthesis
What component of the CO2 diffusion pathway might have been affected by ozone injury?
Carboxylation
What is a characteristic visible sign of fluoride injury to plum foliage?
Dark band separating healthy and injured tissues
How do trees react to the physiological changes caused by air pollution?
By reducing growth and biomass production
What part of the leaf does fluoride enter to cause injury to plum foliage?
Stomata
What is the common notation for the radical trioxygen?
O3
Which of the following is the correct systematic IUPAC name for HO2?
Hydroxyl radical without proton
What is an alternative or comment often used for hydrogen peroxide?
Hydrodioxyl
In the context of radicals, what does the abbreviation NO represent?
Nitrogen monoxide
What is the correct abbreviation for the radical ONOOH?
RO ROOH
Which of the following is a common alternative notation for the alkylperoxyl radical?
Alkoxyl
How are pollutants deposited to plants?
As gases and wet precipitation
Where can gaseous pollutants be taken up by plants?
Stomata and cuticle
At which level of biological organization can the effects of pollutants be observed?
Subcellular, cellular, plant organ, whole plant
What effects on the plant carbon balance are caused by air pollutants?
All of the above
How are changes in photosystems of plants reflected by air pollution?
Deterioration of photosynthetic pigments
What is commonly associated with pollutant exposure regarding chlorophylls and carotenoids?
Decreases in chlorophylls and carotenoids
Test your knowledge on the physiological changes in trees caused by air pollution. Explore topics such as chlorophyll fluorescence, ozone effects, reduction of net photosynthesis, stomatal conductance, and pigment concentrations.
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