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

    The tube later on is inserted into the centrifuge tube and being rotated. The product is a form of chlorophyll extract in partially liquid form. It can be observed that the both supernatant and the debris of the chlorophyll extract are presence inside the tube.

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

    when N is 5, the U value used is 4 thus this is higher than the critical value of 2. Analysis The first suggestion of a difference between the two seeds was that sunflower seeds caught light the slowest, suggesting that the stored energy in sunflower seeds was lower than stored energy in pumpkin seeds.

  2. 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

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

    Non-germinating Seeds = differences in non-germinating seed - differences in Control = 0.020 - 0.020 = 0.00 ml Ice Water: Temperature (�C�1�C) Time (min) Differences in Control (Beads) ml�0.01ml Differences in Germinating Seeds ml�0.01ml Actual differences in Germinating Seeds ml�0.01ml Differences in Non-germinating Seeds ml�0.01ml Actual differences in Non-germinating Seeds

  2. Investigating the Effects of Salt on Seed Germination

    * The same volume/amount of H2O (including salt) used in each petri dish. To control the amount of water poured in each petri dish and ensure that it is the same temperature for each sample, we will carefully measure out 5mL of a NaCl solution in a measuring tube and pour drops evenly around the 10 seeds.

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

    The shoot growth rate has been affected because of the fungal infection. The average number of leaves is the most in pH 7, and has shown a positive growth result overall. The average numbers of leaves are 19 for each seed.

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

    with the visible presence of a radicle seven days after the solution was added to the seeds Salinity of Water (mol L-1) Number of mung bean seeds successfully germinated as determined by the visible presence of a radicle seven days after being exposed to the solution Mean Standard Deviation 0.0

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