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

To find the factors affecting transpiration.

Extracts from this document...


AIM: To find the factors affecting transpiration. THEORY: My theory is that when the plant is the light it will reach a certain distance slower that when it is in the dark. Therefore this means that transpiration happens best when in the light that the dark. VARIABLES: DEPENDENT: The rate of uptake of water. INDEPENDENT: by changing the plant at least once. PREDICTION: My prediction is that when the plant is in the light transpiration will happen quicker than it does in the dark and therefore it will be even more effective. APPARATUS: THE APPARATUS THAT I WILL BE USING ARE: THREE WAY TAP: at the top of the tube SYRINGE: STAND 2x CLAMP 2x BOSSES HALF A METER RULE SCRAP PAPER LEAFY SHOOT BEAKER OF WATER DIAGRAM: METHOD: 1) ...read more.


2) I will allow the plant to settle down in between each experiment. 3) I will change the plant only once in the experiment and that is when I am doing the experiment in darkness. MODIFICATIONS: During the experiments I made one modification and that was that I changed the plant after the second experiment. I also changed the amount of water I the beaker each time I did the experiment. SAFETY: 1) The first safety precaution that needs to be taken is that I should be wearing a safety apron every time that you do the experiment. 2) The second safety precaution that needs to be taken is that you should wear safety goggles all through out the experiment and you shouldn't take them of half way through the experiment. ...read more.


I also did change the pant at least once. The uptake of water is pretty fast for the dark side but for the light side the uptake of water was slower. This is because transpiration is working all the time on the light side but it hardly works on the dark side, that's why the up take in the light is slower. EVALUATION: There is only one anomaly in both of my graphs and that is in the light graph. I think this is because I had to move the plant slightly therefore it could have disturbed the plant. One improvement I could have made was not to move the plant around to much. I could have done more experiments to make my results more accurate and not all over the place. I don't think that I will be doing any extensions towards this experiment. CONCLUSION: My conclusion is that transpiration works better in the light than it does in the dark. ...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. The investigation is aiming to look at transpiration.

    air movement can move water molecules away from the surface of leaves thus creating a steeper water potential gradient and therefore increasing the rate That of xerophytes was when when radiator and electric fan was used {0.9cm3}. this is because as temperature increases water evaporates more from the cell of the mesopyll tissue.

  2. Factors Affecting Infiltration Rates

    The first recording shows that in 4 seconds the water was infiltrated. It slowed down eventually. This graph also shows a more rapid rate of infiltration. Near a hedge the infiltration rate is quick but not as quick as near a tree.

  1. Factors affecting the rate of transpiration

    Because the ends of the guard cells are joined, and also because the thin dorsal walls stretch more easily than the thick ventral walls, each cell becomes semicircular in shape. Thus a hole, the stoma, appears between the guard cells.

  2. Investigation of the factors affecting the rate of transpiration from a shoot of Privet.

    However, water is used up in photosynthesis, and both temperature and light intensity have a direct effect in the rate of photosynthesis.1 This would mean that the results would be showing the effect of light intensity on transpiration and photosynthesis combined which would be pretty useless.

  1. Three separate experiments which are to be carried out to investigate a plant's unique ...

    This is because the top of the leaf is covered in a waxy film called a cuticle which prevents water loss; therefore there will be no stomata on the top layer. On the bottom layer, that waxy cuticle still exists but is much thinner, to allow for evaporation from the stomata.

  2. Factors affecting Germination

    The soil must be well-drained and aerated and care must be taken no to over-water to prevent the seeds from rotting. If the soil is to be fertilized any past treatments of the soil and the current condition, with specific regards to nutrients, must be given extensive consideration before an appropriate fertilizer can be selected and applied.

  1. Investigation Into The Rate of Water Uptake By Transpiration.

    with water vapour so that no more can escape from the leaf. In these conditions, transpiration will slow down. In moving air, the water vapour will be swept away from the leaf as fast as it diffuses out. This will increase the rate of transpiration.

  2. The factors affecting the rate of permeability in a cell membrane?

    The diffusion of water through a partially permeable membrane down a water potential gradient is osmosis. Diagram : http://www.okc.cc.ok.us/biologylabs/Images/Cells_Membranes/osmosis.gif Diffusion Diffusion is the net movement of molecules from a place of higher concentration to a place of lower concentration. The molecules move down a concentration gradient.

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