the effect of light intensity to the rate of photosynthesis (group 8)
DESCRIPTION
The effect of light intensity to the Rate of Photosynthesis (Group 8). FAISAL, Farhan A. BUCIO, Kyna Desiree E. GARRIDO, Nurissa M. POMOY, Rica Blanche C. Objective To investigate the effect of light intensity to the rate of photosynthesis of aquatic plant. - PowerPoint PPT PresentationTRANSCRIPT
FAISAL, Farhan A. BUCIO, Kyna Desiree E. GARRIDO, Nurissa M. POMOY, Rica Blanche C.
I. Objective
To investigate the
effect of light intensity to
the rate of photosynthesis
of aquatic plant.
II. MATERIALS
• AQUATIC PLANT
• WATER
• BASIN
• RULER
• WEIGHING SCALE
• LIGHT SOURCE
WEIGHINGPREPARATION OF
SETUPS DISTANCE MEASUREMENT
COUNTING OF BUBBLES
III. Method
1.)Materials were gathered.
2.) The aquatic plant was weighed
using the weighing scale.
3.)Water was measured.
4.) 2 set-ups were prepared.
a. Set up A – 10 g of aquatic plant was fully
submerged to a 700 ml of water. Then a
light source was placed close to the
container.
b. Set up A – 10 g of aquatic plant was fully
submerged to a 700 ml of water only with
room lighting.
5.) The light source on set up A was powered
on.
6. ) The distance of the light source on setup
A was varied
7.)The bubbles generated per minute by the
plants were counted thrice with an interval of
four minutes.
8.) Data were recorded.
IV. RESULTS
TABLE 1. SET UP A (with light lamp)
Bubbles per minute Distance of the light
source from the container
1st count 2nd count 3rd count Average
1 inch 22 20 24 22
6 inches 16 15 15 15.3
11 inches 10 12 11 11
1ST count 2nd count 3rd count
Average
Number Of Bubbles
8 5 8 7
TABLE 2. SET UP B (room lighting)
Bubbles per minute
DISCUSSION Table 1 showed the number of bubbles
produced by the aquatic plant when the distance of the light source was varied with an interval of 5 inches . Table 2 showed the number of bubbles generated by the aquatic plants under room lighting.
Graph 1 summarizes all the result showing that as the distance of the light increases (decreasing intensity) the rate of photosynthesis decreases.
V. CONCLUSION
The closer the light was to the
aquatic plant, the greater light intensity
it provided to it. This only says that
greater light intensity accelerated the
rate of photosynthesis as more bubbles
were able to form.