Planning
What was the aim of your essay?
To find the effect of light intensity on the position of photosynthesis.
Draw a labelled diagram of the equipment you need
What did you measure?
The strain of the indicator which tells us the amount of carbon dioxide utilize by the plant.
Describe how you carried out your investigation?
1) Add 10cm³ of hydrogen carbonate indicator to each of the 5 boil tubes
2) Select 5 pond toilet shoots of the same length
3) Put pond weed shots in the boiling tube and cover with bong
4) Set boiling tubes up at 20,40,60,80 cm away from your light source
5) feeling at the colour of the indicator at 30 minutes
6) convert the colour to PH using a PH spectrum
7) As carbonic acid gas is more(prenominal) acidic the more Co2 is used the higher the PH will rise
In sepa direct words the more photosynthesis the higher the PH.
What did you change in your audition?
The light intensity by changing the distance from the lamp
What did you watch over the same? Why?
The type of plant so that the rate of photosynthesis is roughly the same.
The lengths of the shoot as longer shoots use more photosynthesis.
The volume of hydrogen carbonate indicator using a measuring cylinder
The same concentration of indicator by pickings it from the same batch
The same lamp to keep the source of light at the same intensity
Bung on tube so it cannot gain Co2 from the atmosphere/ no influence
What things might run the rate of photosynthesis?
Temperature Surface area of leaf
Choose one to canvas and plan an investigation. (Temperature)
What would be youre:
Independent variable -Temperature
parasitic variable PH of the indicator/ amount of Co2 used up or gained
Controlled variables Light intensity, surface area of leaf, smoke of the plant
How would you do the experiment? (Include how many readings you would take and what range you would use)...If you demand to get a full essay, order it on our website: Orderessay
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