3)3) Types of ozoneTypes of ozone
4)4) Effects on humans and plants.Effects on humans and plants.
5)5) Chemical equationChemical equation
7)7) Measures to be takenMeasures to be taken
Ozone, O3 , is
Ozone is formed in stratosphere,which traps uv
rays ,cosmic rays which causes to many diseases.
Colorless but highly irritating to life forms
Found in troposphere as well as in stratosphere
10-15 km above the earth and 4 nm in thickness
Good Ozone v. Bad OzoneGood Ozone v. Bad Ozone
located in the
It traps ultraviolet rays
Protects human life
Bad ozoneBad ozone
produced in the
Called surface ozone or
ground level (O3)
Optimum Weather ConditionsOptimum Weather Conditions
During summers ozone is at highest levels
higher temperatures (> than 85o
During winter and wet and cool summers,
ozone levels are greatly reduced.
Ozone & Human Health EffectsOzone & Human Health Effects
Ozone attacks lung tissue.Ozone attacks lung tissue.
Transcriptional Errors.Transcriptional Errors.
Skin cancersSkin cancers
Ground Level Ozone and PlantsGround Level Ozone and Plants
Causes foliar injury in plantsCauses foliar injury in plants
Reduces growthReduces growth
Reduces crop sizeReduces crop size
Ground Level Ozone Oxidizes Lung Tissue
shortness of breath
chest pain when inhaling deeply
wheezing and coughing
inflammation of the lungs and airways
increased risk of asthma attacks
What is asthma?What is asthma?
Asthma is a chronic inflammatory disease ofAsthma is a chronic inflammatory disease of
the airways that causes recurrent episodes ofthe airways that causes recurrent episodes of
wheezing, breathlessness, chest tightness, andwheezing, breathlessness, chest tightness, and
Ozone Air Pollution is
Harmful to Plants
Plants take carbon dioxide for photosynthesis.
When carbon dioxide enters stoma
Ozone damages cells
Open top field chambers to control ozone
Symptoms of Ozone Injury
Stipples (small darkly pigmented areas ~2-4 mm diameter)
Bronzing and reddening
How To Identify Ozone InjuryHow To Identify Ozone Injury
a)a) The typical symptom of ozone is an upper leaf surfaceThe typical symptom of ozone is an upper leaf surface
interveinal stippleinterveinal stipple. Stipple is the discoloration of small. Stipple is the discoloration of small
groups of cells between the veins, appearing as uniformlygroups of cells between the veins, appearing as uniformly
sized red to brown spots.sized red to brown spots.
Yellow poplar leaf with interveinal stipple
Yellow Poplar ozone damage stippling and chlorosis
I AM THANKFULL TO CORRESPONENT WHO GAVE ME THIS OPPURTUNITY
ALSO FOR PRASAD SIR AND NALINI MAM WHO ENCOURAGED AND ME TO DO
MY SPECIAL THANKS WHO HELPED ME LOT AND FOR AUDIENCE FOR