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

Investigate one of the limiting factors on rate of photosynthesis in a water plant

Extracts from this document...

Introduction

Investigate one of the limiting factors on rate of photosynthesis in a water plant INTRODUCTION Photosynthesis is the process by which plants make their own food for photosynthesis to occur the plants need sunlight energy, the energy is absorbed by a green pigment called chlorophyll which is found in the leaves. This energy then combines with water molecules from the soil, and carbon dioxide from the air. Then as a result of this a type of sugar called glucose is produced and oxygen is made. The equation for photosynthesis is 6co2 + 6H2oc6 H12 o6 + 6o2 There are certain things that affect photosynthesis and these are called limiting factors. Things like light intensity can affect the rate of photosynthesis- we call them limiting factors. It doesn't matter if the plant has lots of carbon dioxide and a nice warm temperature. If light is in short supply, then light will limit the rate of photosynthesis Let's say light intensity is limiting photosynthesis, the only way to increase the rate is to increase the limiting factor. ...read more.

Middle

And if the light is further away the rate of photosynthesis will be slower seeing as there will be less light energy used to split up the water. EQUIPMENT LIST Test Tube Clamp Canadian Pond Weed Paperclip Lamp/Torch SAFETY I will have to take care that I do not touch the hot bulb or splash any water on it and I will have to follow the labs safety rules. WHAT I WILL DO I will be counting bubbles because they are bubbles of oxygen; I am carrying out this experiment to find the speed of photosynthesis. In a blacked out room I will hold a light at 5 different distances (10 cm, 20 cm, 30 cm, 40 cm and 50 cm) away from the weed in water for a minute each. And will repeat this 3 times each so that I will have 3 sets of results to work from, to help me recognise anomalous results and to get an accurate average. In order to keep this a fair test I will use the same piece of pond weed and water each time so that I don't ...read more.

Conclusion

lamp is less EVALUATION I think that on the whole my experiment went quite wrong, the results I gathered were VERY strange I believe this to be because of the poor quality of the pondweed that I used. With the set of results that I had, I was able to calculate an average, however this still did not follow my prediction! I believe that my measurements were about as accurate as I could get using the apparatus that we had. I experienced many problems during the experiment; I found that due to the poor quality of my pondweed. It was photosynthesing very slowly at some points, and photosynthesing to quickly to count at others, another problem was when the desk lamp was closer to the pond weed it actually caused the pondweed to be hotter than in the other further away experiments, and so this made for a slightly unfair test! If I could do thsis experiment all over again I would have taken the opportunity to use other peoples results as mine were so strange. By Shahnaz Zarif 10s ?? ?? ?? ?? Shahnaz Zarif 10s ...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. Mangrove Soil Analysis

    It releases nutrients into the soil as the bacteria and fungi decompose it. In soil such as Stoney Creek Rainforest the percentage of Humus is relatively high in comparison to the actual soil (10.44%). This is due to the fact that Rainforests contain a huge number of plants which are constantly depositing dead leaf litter and branches.

  2. How temperature affects the rate of photosynthesis.

    Increase in temperature can also cause the molecules in the light stage to gain an increase in kinetic energy and to react faster. An indirect affect on temperature in increasing or decreasing the rate of photosynthesis is its affect on enzyme activity.

  1. Investigate the factors, which affect photosynthesis.

    there are two particles, which are carbon and oxygen. These particles are also found in carbon dioxide. Therefore it is assumed that carbon dioxide is required in photosynthesis to produce glucose. Looking at the diagram shown below can represent the necessity for carbon dioxide.

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

    The word photosynthesis means putting together with light. Green plants use energy from light to combine carbon dioxide and water to make food. All our food comes from this important energy-converting activity of green plants. Light energy is converted to chemical energy and is stored in the food that is made by green plants.

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

    They are found in all green parts of a plant. An important aspect of photosynthesis is the integration of carbon dioxide into organic compounds. The resulting products are summed up as assimilates. Mesophyll is in the leaves of most ferns and phanerogams; it is organized into palisade parenchyma and spongy parenchyma.

  2. Investigating the factors, which affect the rate of photosynthesis in a pond plant.

    This chemical is used to catch the light energy needed in photosynthesis. It is so useful to both human life and for their own lives; this is why it is imperative that they're looked after. What will happen is once the preparations are complete is that sodium hydrosulphate will be

  1. Investigate the factors that affect the rate of photosynthesis on a green plant.

    Water is a raw material for photosynthesis and essential to maintain leaf and cell turgor. Any moisture deficiencies to plants result in dehydration of cells and leaves wilting; these effects slow the rate of photosynthesis. Also when the plant is lacking water the stomata will close to reduce water loss.

  2. Which factors affect the rate of photosynthesis?

    If you test a leaf for glucose during photosynthesis, you are likely to find very little because it is changed to starch so quickly after it is formed. If you test a leaf for starch during photosynthesis, you find quite a lot.

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