VISHWABHARATHY
PUBLIC SCHOOL
BIOLOGY INVESTIGATORY PROJECT
ANALYSIS ON EFFECT OF DIFFERENT COLOURS
OF LIGHT ON PLANT GROWTH
NAME:
CLASS: XII A
ROLL NO:
CertifiCate
This is to certify that Dev krishna J S
student of class XII has successfully
prepared the report on the project
entitled “EFFECT OF DIFFERENT COLOURS
OF LIGHT ON PLANT GROWTH” . The
report is the result of his efforts and
endeavours. The report is found worthy of
acceptance as final project report for the
subject CHEMISTRY of class XII. Inpartial
fulfilment of [CBSE] in the academic year
2025-2026
Name and signature Name and signature
Internal examiner External examiner
ACKNOWLEDGEMENT
I would like to express a deep sense
of thanks and gratitude to my project
guide Mrs.P.R.Ushas and
Mrs.Soumya.K.S for guiding me
immensely through the course of the
project. Her constructive advise and
constant motivation has been
responsible for the successful
completion of this project .
My sincere thanks goes to our
principal sir for his co-ordination
extending every possible support for the
completion of this project
I must also thank my classmates for
their timely help and support for
completion of this project.
EFFECT OF DIFFERENT COLOURED
LIGHTS ON PLANT GROWTH
CONTENT
➢ AIM
➢ INTRODUCTION
➢ MATERIALS REQUIRED
➢ OBSERVATION
➢ CONCLUSION
➢ BIBLIOGRAPHY
AIM
The aim of this project is to find out how
different colors of light affect the plant
growth
INTRODUCTION
Different coloured lights helps plants
to achieve different goals. For
example, blue light helps to encourage
vegetative leaf growth in plants while
red light promotes seed germination,
flowering, and fruit production while
red light mixed with blue encourages
and allows plant to flower and are
beneficial for photosynthesis. Knowing
that different colors of light can affect
what a plant does in important in a
world that depends on plants for food.
MATERIALS REQUIRED
1. Colored transparent sheets {red,blue,yellow
and green}
2. Flower pots
3. Bean seeds
4. Potting soil
5. Construction paper in red yellow and white
6. Paper towel
PROCEDURE
i. Take three boxes with five different
colored transparent sheets on top and
front
ii. Plant seeds about half inch to the
pots.
iii. Let them grow
iv. Take measurement every 2-3 days
v. The plants were exposed to different
colored lights
vi. There were three different plant for
each different colored light.
vii. Measure overall height and leaf width
for the tallest and best plant of each
color
OBSERVATION
After the above procedures, it was
observed that the plant exposed to red
light grew the tallest but the one exposed
with transparent\bare light was the
healthiest. The plant exposed to blue light
wilted and died midway through the
experiment and the yellow was close to
beating red. Out of all the plants in the
experiment the plant exposed to the green
coloured light was in the worst condition
CONCLUSION
Different coulored lights indeed affect the
plant growth
This is because after the experiment the red
light exposed plant was the tallest and green
was in the worst condition ou of all plants
involved in the experiment. Although it was
unexpected, the plant exposed to bare light
was the healthiest. Therefore, I conclude that
inorder for getting a tall plant it must be
exposed o red light but for a healthy growh of
a plant it must be exposed to a full colour
spectrum.
BiBLiOGraPHY
❖ WWW.specgradeled
❖ www,slideshare
❖ Wikipedia
