• 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...

Introduction

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.

Middle

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.

Conclusion

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

    Eventually it got even slower and in the last attempt no water infiltrated. This is due to the soil already being wet. A puddle was left in the land when no more infiltrate. Infiltration refers to the movement of water into the soil layer.

  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 factors affecting the rate of permeability in a cell membrane?

    When using the colourimeter always check that the right filter is being used. pH If you change the pH a lot from the cell's normal pH this can make the proteins to change their shape.

  2. Factors affecting Germination

    One of the main dangers when planting basil is the threat of damage as a result of frost hence the optimum season for planting is around late spring (Simon, 1998). When sowing seeds the agricultural climate is of utmost importance.

  1. The investigation is aiming to look at transpiration.

    {2}CUTICLE: a little water perhaps 10% is lost through the cuticle, which is impermeable to gases. Thus thicker the cuticle the smaller the water loss, vice versa. This is called cuticular transpiration. {3} LENTICELS: woody stems of deciduous plants lose small amounts of water vapour through lenticels by lenticular transpiration before leaf fall.

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

    Also, the air movement around the leaves affects the rate of transpiration, because it blows the water that has come from the stomata off the leaf; causing water to be lost more quickly, therefore more water is sucked up. We then took the potometers outside, to see if the humidity affected the rate of transpiration.

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

    Water Supply & Conditions before the experiment - If the plant had been water stressed just before the experiment, then it would have to supply water to make all its cells turgid again. Surface area of plant - A greater surface area will mean more space for transpiration.

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

    Thus, transpiration will take place more rapidly in warm air. When the sun shines on the leaves, they will absorb heat as well as light. This warms them up and increases the rate of transpiration. Air movements - In still air, the region surrounding a transpiring leaf will become saturated

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