Draw a graph showing the amount of oxygen in the flask over time as the bean seeds germinate and grow into small plants. The plants in both of the flasks survive during the entire experiment. Explain what is going on in the cells of the bean plants that causes the oxygen concentration in the flask to change. This process uses oxygen. The plant begins to photosynthesize, which produces oxygen.
More oxygen is produced from photosynthesis than is consumed by respiration.
This process uses oxygen. Since there is no light, the plant can t photosynthesize. However, it continues to use up oxygen from respiration.