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    Rate of Photosynthesis

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    photosynthesis. In this experiment I will investigate how sodium hydrogen carbonate affects the rate of photosynthesis. Apparatus Needed ---------------- ü Glass Funnel ü Desk lamp ü 1 Litre Beaker ü Test tube ü Aquatic Plant (Canadian Pond weed) ü A ball of plasticine ü Sodium Hydrogen Carbonate ü Razor Blade ü Bench lamp with a 40W bulb ü 30cm wooden ruler ü Clock ü Stirring rod Using the Apparatus ------------------- ü I will follow all the lab safety

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    this could affect the plants rate of photosynthesis. The wattage was controlled by a transformer and the pond weed was placed inside the box directly under the light bulb and surrounded by foil. To give the plant Carbon Dioxide we added sodium hydrogen carbonate powder (this bubbles to produce Co2 bubbles).To attempt to control the temperature the test tube containing the pond weed (Canadian) was placed in a water bath- the water would absorb some of the heat. The plant was subjected to different

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    photosynthesis

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    Photosynthesis Investigation to find effects of distance of a light source from pond weed has on the amount of oxygen produced Photosynthesis All green plants need to be able to make their own food.They do this by a process called photosynthesis.For photosynthesis to occur they need sunlight energy.This energy is absorbed by a green pigment called chlorophyll,which is mainly found in the leaves.This energy then combinEs with water molecules (from the soil) and carbon dioxide (from the air).Then

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    The Effect of Light on Photosynthesis Aim:My aim was to investigate how light affected photosynthesis. Prediction:My prediction is that the closer the weed is to the light the faster the photosynthesis as light acts as a catalyst which speeds it up. Bibliography: For my work I used the internet and certain science books for info. Hypothesis:Photosynthesis is a process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into

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    Photosynthesis in Pond-Weed Plan The aim of this activity is to investigate one of the factors that affect the rate of photosynthesis in pond-weed. I am trying to find out if the distance of the pond-weed from a lamp will change the rate of photosynthesis. I will measure the rate of photosynthesis by counting the number of bubbles that are released by the stem of the pond-weed when the lamp is shone on it from different distances. What I think will happen is as the pond weed is moved further

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    Investigating Photosyntesis in Pond Weed Aim: The aim of this experiment is to find out what effects the amount of photosynthesis happening in a pond weed. Introduction: A piece of pondweed will be cut and placed into a test tube containing water and sodium hydrogen carbonate, which is placed inside a beaker containing water. A lamp will be shined on to the pondweed and the amount of bubbles released from the plant will be counted. The lamp will be adjusted to different distances

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    experiment takes place we will place the pond weed (which has been in darkness for at least 24 hours to stop it any photosynthesis) into the beaker. I will then place the funnel over the pond weed and place the test-tube into the beaker (like the diagram above) I will then fill the beaker up with cold tap water till it covers the bottom of the test tube (450ml). This is so that we can easily count the oxygen bubbles as they come off the pond weed. Now that the experiment is ready to start

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    The Effect of Wavelength on Photosynthesis Rate Aim: To investigate how different wavelength (colors) of light affect the photosynthetic rate. I will use a pant that is a pond weed called elodea. I will measure the rate of photosynthesis by measuring the amount of o2 given off in bubbles per minuet from the elodea. I will do this by placing the Elodea in a test tube with sodium hydrogen carbonate then I will vary the light wavelength (color) using colored filters and count the number

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    hydrogen carbonate. I will make sure they stay the same by checking them before each test. I will also do each test three times and make a mean average. I must also thoroughly wash all equipment, after every test. Apparatus · Funnel · Pond weed · Beaker · Water · Measuring cylinder · Stopwatch · Sodium hydrogen carbonate (NaHCO3) Risk Assessment and Safety Precautions There are not many safety precautions that need to be taken into

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    Photosynthesis is the process by which green-plants use sunlight, carbon dioxide, water & chlorophyll to produce their own food source. This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthesis. Light is the factor that is linked with chlorophyll, a green pigment stored

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