Interpreting photosynthesis test results

• What process do plants use to make their own food?

  Photosynthesis
• Why is the food produced by plants important?

  It is important for the plants themselves and for other organisms that feed on them
• What is the relationship between light intensity and the rate of photosynthesis?

  • Higher light intensity generally increases the rate of photosynthesis
  • Limiting factors can affect this relationship
• What is the unit used to measure the rate of photosynthesis in the given experiment?

  Number of bubbles produced per minute
• If a plant is placed 10 cm from a light source, what is the rate of photosynthesis observed?

  120 bubbles per minute
• What is the rate of photosynthesis when the plant is 15 cm from the light source?

  54 bubbles per minute
• What is the rate of photosynthesis at a distance of 20 cm from the light source?

  30 bubbles per minute
• What is the rate of photosynthesis when the plant is 25 cm from the light source?

  17 bubbles per minute
• What is the rate of photosynthesis at a distance of 30 cm from the light source?

  13 bubbles per minute
• Based on the data, what is the suggested rate of oxygen production at 18 cm from the light source?

  40 bubbles per minute
• What factors can affect the rate of photosynthesis?

  • Light intensity
  • Carbon dioxide concentration
  • Temperature
  • Water availability