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

To stimulate the effect of acid rain on plant life, students to set up a lab experiment to compare the effect of varying levels of acidity on plant seed germination.

Extracts from this document...


Effect of acid rain on seed germination Aim: To stimulate the effect of acid rain on plant life, students to set up a lab experiment to compare the effect of varying levels of acidity on plant seed germination. Hypothesis: As the pH of water decreases, the number of seeds germinated will reduce. Variables: Units Dependent variables The number of seeds germinated - Independent variables The pH of water - Controlled variables Units Possible effects on results Sunlight it will start the process of photosynthesis which accelerate the growth of seeds Purity of water pH it will have an effect on the acidity of water which will ultimately affect the germination of seeds Amount of air in zip bag as it is one of the sources of energy for the plants, its presence will accelerate seed germination Controlled variables ...read more.


2. Place filter paper in each the Petri dish with 10 seeds. Cover the seeds with another piece of filter paper. Use a dropper to moisten the filter paper through all layers with the 8.0 pH solution. Put the dishes in a sealed plastic bag and place them in a dark place. 3. Repeat steps 1 & 2 for 6.0, 4.0, 2.0 & 0.0 pH Solutions. 3. 1 - 5 days later, count the number of seeds that have germinated. 4. Measure the root length of each of the seedlings. Record observations about seedling condition (color and overall growth and appearance of seedling leaves). 5. Tally class averages for each pH for germination and root length. Graph your data and the class averages. ...read more.


Then we checked the growth of seeds everyday and took the reading. Evaluation-: While doing the experiment my all the data was perfect. There was error, while doing the experiment. Radish should have grown in2 and 4 % but even one seed did not grow. The acid rain water of each sample at each stage was different. There may be some external substances may have entered the sample and cause a variation in the salinity of the water of the sample. There was a more effect of acid rain water in 0% and 8% as is basic. As 0 and 8% of seeds grew faster than other three. Conclusion-: As we know that our experiment went wrong as there was an error in it. The least growth was in 2 and 4% and fastest was in 0 and 8%. And the highest percent of growing seed was in 0% in day 4 with maximum 10%. ...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. 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.

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

    Water the seeds on a daily basis for about 5-6 days and make any observations necessary. Observations Quantitative Observations Water Temperature (�C) Number of seeds germinated Dish #1: 2.6�C � 0.5 0 Dish #2: 8.2�C � 0.5 3 Dish #3: 11.5�C � 0.5 5 Dish #4: 15.8�C � 0.5

  1. effect of microwave radiation on lentil seeds lab report

    Conclusion Plants use energy from the sun to grow and make food through the process of photosynthesis in their leaves. Some of the sun's energy is in the form of ultraviolet radiation, a kind of electromagnetic radiation. Electromagnetic radiation is also produced in microwaves.

  2. The Effects of Salinity on Wheat Germination

    on wheat germination and growth will be tested (World Journal of Agricultural Sciences 4 Effects of NaCl Salinity on Wheat (Triticum aestivum L.) Cultivars). 1.1.4 Investigation Variables Variable name and Explanation Type of variable Salinity (salt concentration in liquid used to aid germination and growth after germination)

  1. In this extended essay I am looking at the effect of different kind of ...

    Germination in plants is the process in which a seed initiates to sprout and grow into a seedling under the appropriate growing circumstances. It is the development of an embryonic plant enclosed within a seed. The seed of a higher plant is a small package produced in a fruit or cone after the fusion of male and female sex cells.

  2. Environmental Factors affecting plant growth

    sach solution they contained, for example: 100% s; s standing for complete sach solution, 75%s, 50%s, 25%s and 0%s. Also, each tubes in the different sets, were labelled 1, 2, 3, 4 or 5, so that taking measurements was not very complicated.

  1. Investigating the Effects of Salt on Seed Germination

    * The same type of container/petri dish used for each sample and the same type of lid used. To ensure that the same type of petri dish is being used, we will measure the diameter of each of them and ensure that they are all made of plastic.

  2. What is the effect of increasing pH concentration (pH 3, 4, 5, 6 and ...

    Soak each Petri dish with the correct pH solution and label them correctly. * The Petri dishes were left in a corner of the room where sufficient fresh air is available. * The seeds were soaked with the labeled solution everyday and observe the growth rate in the seeds.

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