The document summarizes an experiment on the effect of carbon dioxide concentration on the rate of photosynthesis. Students connected an oxygen sensor to interfacing software and measured oxygen production in a Hydrilla plant exposed to varying concentrations of sodium hydrogen carbonate solution as a CO2 source. Results showed that as carbon dioxide concentration increased, the rate of photosynthesis also increased, indicating a direct relationship between carbon dioxide levels and photosynthesis.

1. SBI3013
Information & Communication Technology in Biology
Group 2: Data Logger (Photosynthesis-Concentration
𝐂𝐎𝟐 on the rate of Photosynthesis)
Name Matric No.
Nur Zafirah Binti Abd Rahman D20181082896
Murshida Adni Binti Muhd Ghazali D20181082940
Tiong Ming Ming D20181082879
Ivy Christie Anak Endah D20181082931
Clearviana Frankie Yong D20181082942
Group : B
Lecturer : Encik Azmi bin Ibrahim

2. INTRODUCTION
Data Logger
• Electronic device
• Records data from some type of sensor
• Stores it in local memory
Photosynthesis
• Process by which plants use energy from
sunlight
• To produce sugar then converted into ATP
• ATP is energy used by living things in
cellular respiration

3. ENGAGE- brainstorming
Situation A Situation B
1. What are the 3 things that plants need to
perform photosynthesis?
2. Do you think the pictures above have 3
things that you just mention earlier?
3. Do you think that these aquarium plant
really need carbon dioxide?
4. Do you think the aquarium plant will dies if
there is no carbon dioxide left behind?

4. EMPOWER
1.Connect
oxygen
sensor to
interfacing
software.
2. Fill
conical
flask
with
distilled
water.
3. Put
10cm
long
Hydrilla
into the
conical
flask.
4. Insert
oxygen
sensor
into the
conical
flask.
5. Put
bench
lamp at
0.25 cm
from
Hydrilla.
6. Place
water
tank
between
Hydrilla
and bench
lamp.
7.Switch on
bench lamp
for 5 min.
8. Click
button
“start” on
the
software.
9. Repeat
experiment with
0.1%, 0.15%,
0.2%, 0.25%,
0.3%, and 0.4%,
sodium
hydrogen
carbonate
solution.
10. Record
observations
METHODOLOGY
Oxygen sensor Interfacing software

5. EMPOWER
Concentration of Sodium
Hydrogen Carbonate solution (%)
Rate of photosynthesis
(cm3min-1)
0 0
0.1 0.002
0.15 0.006
0.2 0.012
0.25 0.018
0.3 0.022
0.4 0.022
RESULTS DISCUSSION
1. What is the purpose of placing water tank
between Hydrilla and the bench lamp?
To prevent a change in temperature.
2. Why did we use sodium hydrogen carbonate
solution instead of distilled water?
Distilled water causes stomata to close and
reduce CO2.
3. According to the results, what is the effect of
carbon dioxide concentration on the rate of
photosynthesis?
When concentration of CO2 increases, the rate of
photosynthesis also increases.

6. ENHANCE
It appears that the average rate of photosynthesis and carbon
dioxide concentration have a direct relationship. To put it another
way, when carbon dioxide levels rise, so does the rate of
photosynthesis.

7. EXTENSION
When leaves were tested with iodine solution, the covered area
remain unchanged while uncovered area change leaf colour to Blue-
black. Why is this happen?

8. UNIQUE FEATURES
1. Low-time consuming
2. Can be repeated or stopped at any time
3. Long-term data