Limiting Factors

• What are the three other factors that limit photosynthesis?

  Carbon dioxide concentration, temperature, chlorophyll
• How does increasing carbon dioxide concentration affect photosynthesis?

  It increases the rate of photosynthesis
• What happens when carbon dioxide concentration is increased beyond a certain point?

  The rate of photosynthesis no longer changes
• What effect does increasing temperature have on photosynthesis?

  It can increase the rate of photosynthesis
• What happens if the temperature is increased too much?

  Enzymes in the leaf will denature
• What can act as limiting factors in photosynthesis?

  Light intensity, carbon dioxide, temperature, chlorophyll
• How do greenhouses increase the rate of photosynthesis?

  • Provide controlled light and heat
  • Increase carbon dioxide concentration
  • Enhance crop yield
• Why do farmers use greenhouses?

  To increase the yield of crops
• What is a challenge of using greenhouses for increasing photosynthesis?

  It can be expensive to maintain
• How do oil burners help in greenhouses?

  They release heat and carbon dioxide
• How does temperature affect enzyme activity in photosynthesis?

  Higher temperatures can denature enzymes
• What economic considerations must farmers take into account when using greenhouses?

  Cost must be justified by increased yield
• What is the benefit of using oil burners in greenhouses?

  They provide both heat and CO2