• 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 ...

    The radicle is the root part of the germinated seed and this is the factor that determines whether or not the seeds got germinated. From these results, one can conclude that the longer the diameter of the radicle, the more the seed got germinated.

  2. The Effects of Salinity on Wheat Germination

    This should help to isolate any invalid effects concerning whether it really was the effect of the salt should the experiment indicate slower growth and germination in the seeds with the saline solutions. For example, if the control with no salt were to germinate and grow even slower than the

  1. Environmental Factors affecting plant growth

    tube holders to hold all the tubes, markers to mark the tubes, graph paper to measure surface area of leaves, pipettes to mix solutions and flasks to mix solutions in. The following diagram explains how the experiment was set up and also the method used to carry out the experiment.

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

    0.43 1.87 1.91 Table 5: The table above shows the amount of absorption of wavelength by the mustard sample exposed to different wavelength, referred to standard solution and taken in 3 different trials. Qualitative Data Observations Both spinach and mustard are green in colour Both spinach and mustard becomes softer

  1. Biology Lan - factors affecting enzyme activity

    Five tubes with catalase were put into the beaker for 5 to 10 minutes. 5 ml of hydrogen peroxide was dropped into a vial. A filter paper discs were coated with the catalase and were dropped into a vial without letting it touch the substrate, hydrogen peroxide.

  2. 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

  1. How does the salinity of water affect the germination of mung been seeds as ...

    were small, indicating that these the values were close to the mean and therefore valid. However, at 0, the error bar is very large (1SD is 3) this indicates that the values recorded for this percentage was less valid and some other factor may have been affecting the results.

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

    in the body during sleep and how those changes affect our ability to move and think. Of course, we?ve heard that a good night?s sleep will help us perform better on a test the next day, but is this based on scientific fact, or is it just a continuing myth?

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