How does increased carbon dioxide concentration affect photosynthesis?

Practice Questions

Q1
How does increased carbon dioxide concentration affect photosynthesis?
  1. Decreases rate
  2. Increases rate
  3. No effect
  4. Inhibits light reactions

Questions & Step-by-Step Solutions

How does increased carbon dioxide concentration affect photosynthesis?
  • Step 1: Understand that photosynthesis is the process plants use to make food using sunlight, water, and carbon dioxide.
  • Step 2: Know that carbon dioxide (CO2) is one of the key ingredients for photosynthesis.
  • Step 3: Realize that when the concentration of carbon dioxide in the air increases, plants have more of this ingredient available.
  • Step 4: Understand that with more carbon dioxide, plants can produce more food (glucose) through photosynthesis.
  • Step 5: Recognize that this increase in photosynthesis can lead to faster plant growth, but only up to a certain point.
  • Step 6: Remember that if other factors (like sunlight or water) are limited, the increase in carbon dioxide won't help much.
  • Photosynthesis – The process by which green plants and some other organisms use sunlight to synthesize foods with the help of carbon dioxide and water.
  • Carbon Dioxide Concentration – The amount of carbon dioxide present in the atmosphere, which can influence the rate of photosynthesis.
  • Rate of Photosynthesis – The speed at which photosynthesis occurs, which can be affected by various factors including light intensity, temperature, and carbon dioxide levels.
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