Germination Experiment Essay

Variables

Independent variables are the sucrose concentration and time. The concentration of sucrose will have an effect on the growth and height of the common wheat.

Dependent variable is the height of the common wheat seeds. How high do the common wheat seeds grow during the experiment (7 days)?

Controlled variables Water

The amount of water is always the same 13ml. Water what will be used is tap water. Water is given to the common wheat every day. The temperature of the water is not controlled, but the water is poured into Pyrex 600ml beaker. The water from the beaker is used for watering all the samples. This way the water temperature is same for all samples. The temperature of water will not have an effect on the rate of germination,

The amount of seeds in different sets will always be the same 22 seeds.

Sunlight

All the seeds receive the same amount of natural light and their location remains unchanged throughout the experiment. The sunlight is controlled (kept constant), so it will not have an effect on the rate of germination in common wheat seeds.

Temperature

Keeping the common wheat seeds in the same place controls the temperature during the experiment. This prevents the variation in temperature between the different samples. Because of this the temperature will not have an effect on the rate of germination in the common wheat seeds.

Soil

Biolans musta multa is used as a soil. Biolan musta multa is soil mixture matured through composting containing fertilized chicken manure peat compost and calcified magnesium containing limestone powder. Same soil is used for all sets/seeds throughout the experiment. Plastic pots (5cmx5cmx5cm) are used for the soil and the common wheat seeds. Soil is poured to the height of 4.00cm in the plastic pot. Doing this for every plastic pot provides same circumstances for every sample of the common wheat.

Material

Because of this I watered the common wheat seeds on Thursday and Friday and left them grow during the weekend. I watered them again on Monday and because the soil was moist enough I did not water them on Tuesday. On Wednesday I watered all the common wheat seeds only with water (no sucrose mixed with water), because it seemed like the common wheat might die or stop growing. I collected the data by measuring the height of the common wheat on Thursday, when one week at the beginning of the experiment was passed.

During the experiment I also noticed that the soil of the common wheat seeds, which where watered with sucrose, began to harden. This made the soil difficult to absorb the water (with the sucrose) and I had to make little holes with glass rod to the soil to get the water absorbed in the soil.

Picture 1.2

The Picture 1.2 was taken on Monday and you can already see the growth of the common wheat seeds. The growth is still very small, even that five days has been gone from the planting. You can see clearly how the common wheat seeds watered only with water have grown faster and higher than those watered with the sucrose solution.

Picture