Experiment on the growth of bean seedlings Experiment on the growth of bean seedlings Purpose: to compare the growth of bean seedlings in a different soil solution. Basic Knowledge: Plants produce their own food through photosynthesis. They need light and CO2 from the atmosphere and water absorbed from the soil. Plants also require very small amounts of minerals for healthy growth. Mineral ions are absorbed through the roots by chemical compounds dissolved in the soil. When garden centers sell bottles of “Plant Food,” they are selling solutions of some of the most important minerals; these can be added to the soil in which the plants grow. When plants are unable to absorb enough of an important mineral, they show signs of deficiency. If the plant absorbs a minimal amount of nitrates, phosphates, potassium, iron, magnesium, sulfate or calcium, its appearance and growth will be affected. For example, potassium helps photosynthesis and magnesium is necessary for the plant to produce chlorophyll. If magnesium is in short supply, leaves, especially old ones, become muted or pale. Iron is part of the chlorophyll molecule and deficiency of the mineral will make leaves pale. Some substances, known as trance elements, can also be toxic to the plant. Copper is one of the trace elements. Nitrate, phosphorus and potassium are the substances that are most often in short supply. In soils, nitrogen is the most important because it combines with the sugar produced during photosynthesis to form amino acids. These amino acids join together to form large protein molecules. Plants without nitrogen grow very poorly.Sugar + Nitrate à amino acids à Proteins(From photosynthesis) (From soil)General plan:* I will take three jars and fill them with soil.* Then I will put one