THE EFFECTS OF CIGARETTE SMOKE ON

PLANT GROWTH

GROUP MEMBERS:NURHIDAYAH MAT SARIT

KHALILLAH BINTI KHAIRUDDINNUR ZHARFANI ABDUL HAKIM

SALSABILA CHE IBRAHIM

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.

LITERATURE REVIEW

TAR

CARBON MONOXIDE

LOW

MEDIUM

HIGH

CIGARETTE

FILTER

UNFILTER

LIST OF EQUIPMENTS

• SEEDS• CIGARETTES• LIGHTER• ERLENMEYER FLASK• VACUUM• PLASTICINE• PARAFILM• BEAKER• COTTON WOOL• TUBE• BASIN

• 1st experiment= EFFECT OF CIGARETTE SMOKE ON PLANT HEIGHT

Since combustion needs oxygen to perform, we make sure that there’s a space for air to circulate.

Smoking chamber..

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

• 2nd experiment= COLLECTION OF TAR IN CIGARETTE SMOKE

• 1st experiment

RESULTS…..

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

• 2nd experiment

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

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

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.