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How Does Light Intensity Affect The Rate Of Photosynthesis

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Question:
Do different species of hydrophytes experience different rates of photosynthesis when exposed to high light intensity over a variety photoperiods.

Hypothesis:

I predict that when the three species of hydrophytes are exposed to high light intensity over different photoperiods ,the hydrophytes with larger leaves will react sooner than the hydrophytes with smaller leaves and when each hydrophyte is exposed to a longer photoperiod the hydrophytes rate of photosynthesis will decline due to the high concentration of heat .

Aim:
This experiment is to test the effects of light intensity on the rate of photosynthesis in three species hydrophytes when each hydrophytes is exposed to the same series of lengthened photoperiods
Introduction: …show more content…

To successfully test the light intensity solely from a strong light bulb I have used medium sized cardboard box that I cut a hole the top of for a light fitting and then the two larger side flaps are shut for the course of the photoperiod.
Each hydrophyte will be exposed to the light for four minutes at first then each photoperiod will be increased by two minutes until the hydrophytes is exposed to the light for ten minutes. After each hydrophyte has under gone a phase of the experiment it will be rested in cool water while the next plant is tested .
I will test the rate of photosynthesis in each plant by counting the number of oxygen bubble produced by each …show more content…

Screw light bulb into light fitting.
Place light fitting into the hole by pulling cord through the the hole first .
Plug the cord into an adaptor at the chosen plug point.

How to make the plastic jars.
Use three two liter bottles.
Cut ten centimeters off the top of the bottle.
Throw the top piece into the dustbin /recycling bin.
How to test the rate of photosynthesis in the hydrophytes
RECORD RESULTS AFTER EACH HYDROPHYTE HAS BEEN EXPOSED TO EACH PHOTOPERIOD.
Place hydrophytes in plastic jar.
Place hydrophyte in plastic jar into a container in case of spillage.
Place hydrophyte in plastic jar into the heat and light insulator .
Leave the hydrophyte in plastic jar in the heat and light insulator for four minutes.
Repeat steps one to four with hydrophyte B and C.
Place the hydrophyte into the heat and light insulator for six minutes.
Repeat step six for hydrophytes B and C.
Place the hydrophyte into the heat and light insulator for eight minutes.
Repeat step eight for hydrophytes B and C.
Place the hydrophyte into the heat and light insulator for ten minutes
Repeat step ten for hydrophytes B and

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