• 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. Factors Affecting Infiltration Rates

    Agriculture and the tillage of land also changes the infiltration patterns of a landscape. Water that, in natural conditions, infiltrated directly into soil now runs off into streams. Evapotranspiration: Some infiltration stays near the land surface, which is where plants put down their roots.

  2. Factors affecting the rate of transpiration

    This could be explained by too much water evaporating from the stomatal pores. Therefore the cell becomes flaccid and K+ and Cl- concentration increases. Therefore the guard cells start to become thinner and the guard cell decreases in length closing the stomatal pore.

  1. The investigation is aiming to look at transpiration.

    They are: {1} LEAF AREA: since a proportion of water loss occurs through the cuticle, the greater the total leaf area of a plant, the greater the rate of transpiration regardless the number of stomata. In addition any reduction in leaf area certainly involves in the total number of stomata.

  2. Factors affecting Germination

    If harvesting for leaves to be dried it is recommended that this takes place just before the flowering occurs whereas if the leaves are going to be distilled for use as an essential oil harvest is recommended during full flower.

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

    I will also not be able to change the number of stomata present on the leaf's surface; therefore I will assume that there will be an equal spread of stomata over each and every surface. All of these are factors that may affect the experiment, but hopefully I will be able to conduct a fair test.

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

    high temperature but is not too high were the water will start to boil. I also decided that 5 minutes was sufficient time to let the beetroot in the water because by then what was going to happen has happened and leaving it in for longer made no difference.

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

    In the preliminary experiment, we didn't take down results, but made a note of how much water was taken up by the roots (and therefore how much water was lost through the leaves by evaporation). We set our potometers up in several different locations (and therefore different circumstances)

  2. Investigate factors affecting rate of transpiration in a leafy shoot.

    The test tube labelled controlled should show the least decrease in water level. Scientific knowledge: The external factor, which has the greatest effect on transpiration, is temperature. The higher the temperature, the greater the rate of evaporation of water from mesophyll cells and the greater the saturation of the leaf atmosphere with water vapour.

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