LULLY 2.1. The dlagram below shows the apparatus used to investigate the rate of photosynthesis in a
submerged plant. The light intensity to which the plant is subjected, was decreased at regular
intervals by moving the light source away from the plant. The average number of bubbles released
per minute, was counted and recorded for each distance
study the information provided and answer the questions that follow.
Position of lamp in cm
The results obtained is shown in the following table.
Distance from lamp (cm)
5
10
20
25
35
40
50
Number of bubbles per minute
70
65
40
25
15
5
2
2.1.1. Formulate a hypothesis for the above investgation
(2
212 State the following:
Dependent variable
independent variable
Fixed variable
2.1.3. State ONE way in which the reliability of the investigation could be improved.
2.1.4. Draw a line graph to represent the data in the table.​