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

Seed germination experiment. Aim: To investigate the following factors affecting seed germination (warmth, water, light, air)

Extracts from this document...

Introduction

Victor Vild´┐Ż 10 may 2010 Seed germination I) Aim: To investigate the following factors affecting seed germination (warmth, water, light, air) II) Hypothesis: The seeds with all the factors will be the best developed. I think the grains without water, air and warmth will not grow because seeds need water and warmth to be activated and they need oxygen to develop. The seeds without light will grow but it will not have a green colour because the plants need light to make photosynthesis. III) Variable: Constant: cotton wall, surface area of the boiling tube, water, light, air. Independent variable: warmth Dependent variable: seeds germination IV) Laboratory apparatus: * 5 Boiling tubes to put the seeds in a special environment with different factors (no warmth (1), no water (2), no light (3), no air(4), Control (5)) ...read more.

Middle

We take the four left and we put the same amount of water in them. Then we take three of them to be the cases with no light, no warmth and the control. With the last one we put oil in it to be the case with no air. Then we take the boiling tube that has to be the case with no light and put it in a dark cupboard. We take the boiling that has to be the case with no warmth and we put it in a fridge. VI) Results table: "The factors affecting seeds germination" Independent Variable Germination Colour Image Height (cm) Amount of seed germinated (/10) Other observations Control Yes Green 2.5 6 No warmth No The seeds are cold No water No The seeds are dry ...read more.

Conclusion

A seed needs light because the leaves make energy from light by photosynthesis. The photosynthesis makes the green colour of the plant and converts carbon dioxide to sugar or other organic compounds to make energy. So a seed needs warmth, water, air and light to develop correctly. VIII) Evaluation: Weakness and errors in the procedure Suggestion to improve The case of the control, the light is an artificial light. To redo the experiment with the boiling tube near a windows without artificial light. In the case with no light, the cupboard was not totally dark. To redo the experiment with the boiling tube in a totally dark environment In the case with no warmth, the fridge was cut during 48 h To redo the experiment without cutting the fridge. We tried with one kind of seed. We have to try with other kind of seed. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology 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 International Baccalaureate Biology essays

  1. Seed Germination Experiment. How would different levels of temperature of water affect the rate ...

    Thus, showing the water temperature was closer to being the accurate temperature that is needed for this type of seed to get germinated. Making connections to society and the environment affects the farmers. For farmers, if they known the "right" temperature for the process of seed germination to occur, then

  2. Determine the energy content of different types of Seed: Compare the calorie content of ...

    The bar graph showing the change in temperature when using the kinetic energy form the two seeds, includes error bars. They show the range of data to the average recorded. The error bars on this particular graph over lap therefore the ranges cross and this suggests that the difference between the energy stored of the two seeds is low.

  1. The Effects of Salinity on Wheat Germination

    Light intensity All seeds will be placed at exactly the same distance from the light source - the kitchen window. Time of watering All seeds will be watered at the same time of 3 o'clock in the afternoon. Wind All seeds will be placed in the same place (next to

  2. Experiment Colours of Light (Wavelength) absorbed by green plant

    550 0.47 0.31 580 1.00 0.20 590 1.16 0.03 680 1.39 0.045 Table 8: The table above shows the standard deviation of the average percentage of absorption of wavelength of spinach E.g. The standard deviation for the average absorbance of wavelengths by mustard sample (With respect to standard solution at 0.00 absorbance)

  1. Bio lab - Oxygen Consumption in germinating and non-germinating seeds

    Final Value = 0.90 - 0.85 = 0.005 ml Actual differences in Germinating Seeds = Differences in germinating seed - differences in control = 0.050 - 0.020 = 0.030 ml Differences in Non-germinating Seeds = Initial value - Final Value = 0.90 - 0.88 = 0.020 ml Actual differences in

  2. Environmental Factors affecting plant growth

    The points will be pretty much very close to each other. Apparatus For the experiment I required twenty five tubes for five treatments; there were about five replicates for each treatment so that our results did not contain any complications.

  1. Investigating the Effects of Salt on Seed Germination

    To keep the temperature the same, we will ensure that each solution bottle is at room temperature. * The same spacing of seeds in the petri dish and the same gap between them (1cm). To ensure that the experiment is fair, we will equally space the seeds around the edge

  2. Sleep is a normal part of human life. Investigate the neurobiological basis of normal ...

    Don?t lie in bed awake: if you can?t sleep don?t just lie in bed, do something else like reading, watching television, or listening to music until you feel tired again. The anxiety of unable to fall asleep can actually contribute to insomnia 15.

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