• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigation into the factors that affect the rate of photosynthesis

Extracts from this document...


Biology Investigation: Investigation into the factors that affect the rate of photosynthesis Photosynthesis: Photosynthesis is the chemical process, which takes place in every green plant to produce food in the form of glucose. Plants use the energy from the sun to make the glucose, which is sent around the plant. Photosynthesis takes place mainly in the leaves with the aid of chlorophyll, which is found in chloroplasts. Leaves have a large surface area to obtain more the most sunlight as possible to photosynthesise. The chemical equation for photosynthesis is: Carbon dioxide + Water = Glucose and Oxygen 6CO2 + 6H20 = C6H1206 + 6O2 I have decided to do a preliminary experiment to help me with my investigation. I have chosen to investigate how light affects the rate of photosynthesis. I will use this information to help me with my main investiagtion into how colours affect the rate of photosynthesis. ...read more.


13 15 14 30cm 12 8 10 The results of the table will now be shown on a graph for clearer understanding of the pattern. The graph results tell me that the most productive distance is 2cm away from the boiling tube. I predicted this would be the most productive temperature as it is the closest and provides the most heat. To be safe I will keep the lamp 4cm away to stop the water overheating and killing the enzymes. Using this information I can start the initial investigation and find out which colours affect photosynthesis in a pondweed. Aim: How colour affects the rate of photosynthesis Prediction: I predict that the colours yellow, white and green will produce less bubbles because the light will be reflected. The colour red and blue, however, I think will produce more bubbles because the light will be absorbed. Apparatus: > Lamp > Coloured plastic sheets (red, green, blue,white and yellow) ...read more.


Conclusion & Evaluation: I am pleased with the overall experiment, as my prediction was correct. If I were to repeat this experiment I would make sure I repeated the experiment twice to get an average. I was unable to repeat the experiment as I didn't have time but I know they would've made my overall results clearer. To improve the accuracy of the investigation I could only count the bubbles that were of a certain size or only the ones coming from the very end of the plant. Also to extend the investigation I could change certain factors. For example: > The type of plant > The length of the plant > The temperature of the water You could also use different chemicals in the water to see if that affected the rate of photosynthesis. I am pleased with this experiment because I managed to do a preliminary experiment and also I used several colours so I could compare the results. Overall I think the investigation went well although it could be improved in. I also found it quite difficult to keep the investigation fair. Katie Jones 11MAC ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Green Plants as Organisms essays

  1. Photosynthesis Investigation

    The site of photosynthesis For photosynthesis to occur, carbon dioxide, water and light energy must come together where there is chlorophyll in the flowering plant. Leaves, which are usually broad and flat, are the parts of the plant most suitable for photosynthesis.

  2. How temperature affects the rate of photosynthesis.

    So the amount of oxygen and hydrogen ions produced at photolysis will increase and more unstable intermediate and therefore more glucose will be formed as a result of a higher rate of carbon fixation at the dark stage. In the experiment, as the temperature will increase, a large length of the oxygen bubble will be recorded.

  1. Yeast Investigation

    The amount of water in the suspension around the outside of the yeast can affect the way respiration takes place. The water in the suspension could differ respiration results because the water is there to keep the temperature of the yeast constant.

  2. The aim of my investigation was to determine how limiting factors would affect the ...

    It is located in a ring of meristematic tissue, called the cambium that is found within the mature stem. The cells produced in the meristems soon become differentiated into one or another of several types. Protective: protective tissue covers the surface of leaves and the living cells of roots and stems.

  1. Osmosis Investigation

    * Increased air movement, which increase evaporation. * Decreased humidity because water evaporates more easily into dry air. * The state of the stomata, their number, distribution, position and size. Importance of water Water is so important for plants; they can't survive without it because: * It enable transport of

  2. What factors affect the rate of photosynthesis?

    C-C bond energy that can be released by glycolysis and other metabolic processes. Overview of the two steps in the photosynthesis process. Image from Purves et al., Life: The Science of Biology What Factors affect the rate of photosynthesis? * Light intensity: The first step in photosynthesis is the absorption of light by pigments.

  1. Investigating the abiotic factors that affect the size of Ivy leaves in shaded and ...

    However, much of the glyceraldehyde-3-phosphate is passed through a series of steps to replace the RuBP, without which further carbon dioxide cannot enter the cycle. The products of photosynthesis, although initially carbohydrates, are rapidly fed into other biochemical pathways to produce amino acids and lipids for the requirements of the cells of the plant.

  2. Find out what factors affect the rate of photosynthesis. Rate being the amount of ...

    Therefore if my results are according to distance vs. rate of photosynthesis, I predict the graph will be a negative curve. Without sunlight a plant does not grow and will die. This is because the sunlight is the source of energy that the plant needs.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work