Lab 5

Germination and Productivity

Part 2

1-      What was our control for this experiment?

The control for this experiment was to calculate the germination and total plant growth in heights of the radish seeds that grow under the normal light condition and total darkness. Based on our traditional botanical knowledge; we advanced the hypothesis that plant cannot grow in the total darkness. To carry out this study, we planted 4 seeds per cup in 36 cups for every sample (light and dark). The analysis of this experiment happened one week after the planting date.

2-   What is the percent germination for light treatment? For dark treatment?

Percent germination =(total number of seeds germinated    )/(total number of seeds planted)*100

                                    x=69/144*100

                                    x = 48% for light treatment

                                    x=50/144*100

                                    x = 35 % for the dark treatment

3- Make a graph of a total germination percent per treatment.

Part 3

1-    Compare the difference in appearance in the dark treatment and the light treatment plants. If there is a difference in appearance, explain.

• In the light treatment, the seedlings were green and grow curvely because of the competitivity for the sunlight.
• In the dark treatment, most seedling weak , yellow and dropped leaves and started dying.

2-If there was growth in the dark treatment plants, explain why that growth may have taken place even though light was not reaching the plants.

The growth in the dark happened because the seeds have an ambryon that break down the shell and come out  for searching light. A little bit of sugar was stored in the ambryon which was using to provide energy for  the leaves in a short period of time. Without the presence of sunlight, the leaves became weak and yellow because they didn't have chlorophyll.

3-    Using your calculation of class’s data, draw or make three graphs, showing comparison on  average height, dry and wet weight between light and dark treatment. Titles your graph label your x and y, and make sure your treatment are clear in each graph.