The Effects of Cigarette Smoke on Plant Growth
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THE EFFECTS OF CIGARETTE SMOKE ON
PLANT GROWTH
GROUP MEMBERS:NURHIDAYAH MAT SARIT
KHALILLAH BINTI KHAIRUDDINNUR ZHARFANI ABDUL HAKIM
SALSABILA CHE IBRAHIM
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OBJECTIVES
a)To determine whether the cigarette smoke gives positive or negative effect on plant.
b)To study the content in cigarette that affects the plant most.
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LITERATURE REVIEW
TAR
CARBON MONOXIDE
LOW
MEDIUM
HIGH
CIGARETTE
FILTER
UNFILTER
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LIST OF EQUIPMENTS
• SEEDS• CIGARETTES• LIGHTER• ERLENMEYER FLASK• VACUUM• PLASTICINE• PARAFILM• BEAKER• COTTON WOOL• TUBE• BASIN
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• 1st experiment= EFFECT OF CIGARETTE SMOKE ON PLANT HEIGHT
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Since combustion needs oxygen to perform, we make sure that there’s a space for air to circulate.
Smoking chamber..
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Watering them everyday…
Timing – 4 hours interval , 15 minutes exposure
3 days exposure, 12 cigarettes used.
morning afternoon evening night
8.00 am 12.00 pm 4.00 pm 8.00 pm
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• 2nd experiment= COLLECTION OF TAR IN CIGARETTE SMOKE
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• 1st experiment
RESULTS…..
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Average height , cm(before) Average height, cm
(after) Height increase, cm
A(controlled) 16.13 18.27 2.14
B(filtered cigarettes) 19.43 19.65 0.22
C(non-filtered
cigarette)18.97 19.78 0.81
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• 2nd experiment
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AMOUNT OF CIGARETTES INITIAL MASS OF COTTON WOOL, g
MASS OF COTTON WOOL AFTER EXPOSURE, g
1 FILTERED CIGARETTE 1.56 2.01
3 FILTERED CIGARETTES 1.56 1.55
1 UNFILTERED CIGARETTE 1.54 1.57
3 UNFILTERED CIGARETTE 1.52 1.54
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DISCUSSIONPOSITIVE NEGATIVE
SUPPLY CO2 TO PLANT-Carbon monoxide, for example, is able to be converted by the plant into carbon dioxide, which the plant can use readily for photosynthesis.
CONTAIN HARMFUL SUBSTANCES THAT INHIBIT PLANT GROWTH-
cigarette smoke harms plants' growth by interfering with their respiration,
photosynthesis and nutrition uptake.
Respiration Photosynthesis microorganism
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CONCLUSION….
a)the cigarette smoke did gives positive and negative effect on plant growth.
b)the content in cigarette that affects the plant most are tar and carbon monoxide, despite other substance such as formaldehyde, ammonia, carcinogen, hydrogen cyanide, arsenic, and DDT.