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Physiological Changes in Trees due to Air Pollution Quiz

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Physiological Changes in Trees due to Air Pollution Quiz

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Questions and Answers

What is considered a good indicator of ozone effects in trees?

Pigment concentrations

Starch accumulation

Net photosynthesis reduction

Chlorophyll fluorescence (correct)

Which physiological change in trees was more pronounced due to ozone injury?

Net photosynthesis (correct)

Starch accumulations

Pigment concentrations

Stomatal conductance

What component of the CO2 diffusion pathway might have been affected by ozone injury?

Mesophyll

Stomata

Carboxylation (correct)

Excitation components

What is a characteristic visible sign of fluoride injury to plum foliage?

Dark band separating healthy and injured tissues Signup and view all the answers

How do trees react to the physiological changes caused by air pollution?

By reducing growth and biomass production Signup and view all the answers

What part of the leaf does fluoride enter to cause injury to plum foliage?

Stomata Signup and view all the answers

What is the common notation for the radical trioxygen?

O3 Signup and view all the answers

Which of the following is the correct systematic IUPAC name for HO2?

Hydroxyl radical without proton Signup and view all the answers

What is an alternative or comment often used for hydrogen peroxide?

Hydrodioxyl Signup and view all the answers

In the context of radicals, what does the abbreviation NO represent?

Nitrogen monoxide Signup and view all the answers

What is the correct abbreviation for the radical ONOOH?

RO ROOH Signup and view all the answers

Which of the following is a common alternative notation for the alkylperoxyl radical?

Alkoxyl Signup and view all the answers

How are pollutants deposited to plants?

As gases and wet precipitation Signup and view all the answers

Where can gaseous pollutants be taken up by plants?

Stomata and cuticle Signup and view all the answers

At which level of biological organization can the effects of pollutants be observed?

Subcellular, cellular, plant organ, whole plant Signup and view all the answers

What effects on the plant carbon balance are caused by air pollutants?

All of the above Signup and view all the answers

How are changes in photosystems of plants reflected by air pollution?

Deterioration of photosynthetic pigments Signup and view all the answers

What is commonly associated with pollutant exposure regarding chlorophylls and carotenoids?

Decreases in chlorophylls and carotenoids Signup and view all the answers