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Investigation to find out whether plants need nitrate, phosphate and potassium.
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Subash Mawji/10G2 Biology coursework - Minerals Aim We are carrying out an investigation to find out whether plants need nitrate, phosphate and potassium. Key Factors Things to keep the same (to make a it a fair test) * Make sure the right amounts of minerals are added to the distilled water in each beaker otherwise it will not be a fair test. This will ensure the only outcome of the experiment can be based on the deficiencies of the minerals. * Make sure the seedlings are provided with the same amount of light. It would not be a fair test if three seedlings were left in the shade and another nine on the windowsill. Therefore if some seedlings are left in an area with less light it can come out as a limiting factor, affecting the outcome of the whole experiment. * The environment in which the seedlings are left in can affect the experiment, e.g. if...
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