rate of reaction

• What do plants need to carry out photosynthesis?

  Light, carbon dioxide, temperature, chlorophyll
• How does chlorophyll affect photosynthesis?

  Less chlorophyll means less photosynthesis
• What can cause variations in chlorophyll levels in plants?

  Disease, environmental stress, lack of nutrients
• What are the main limiting factors for photosynthesis?

  Light, carbon dioxide, temperature
• What is plotted on the x-axis of photosynthesis graphs?

  Light intensity, carbon dioxide, temperature
• What happens to the rate of photosynthesis as light intensity increases?

  The rate of photosynthesis increases
• What does it mean when the graph of photosynthesis plateaus?

  Another factor is limiting photosynthesis
• How does carbon dioxide concentration affect photosynthesis?

  Higher concentration increases the rate
• What happens to the rate of photosynthesis at high temperatures?

  It initially increases, then decreases
• At what temperature do enzymes involved in photosynthesis denature?

  About 45 degrees Celsius
• What does a graph with two curves indicate in photosynthesis experiments?

  Different conditions affecting photosynthesis
• How can farmers create optimal conditions for photosynthesis?

  Using greenhouses, artificial light, CO2
• What is one benefit of using greenhouses for crops?

  They trap heat and protect from pests
• Why might farmers pump carbon dioxide into greenhouses?

  To enhance the rate of photosynthesis
• What must farmers consider when increasing conditions for photosynthesis?

  The cost versus the expected yield
• What are the conditions affecting the rate of photosynthesis?

  • Light intensity
  • Carbon dioxide concentration
  • Temperature
  • Chlorophyll levels
• How do different factors limit photosynthesis in plants?

  • Light: Insufficient light reduces energy
  • Carbon dioxide: Low levels limit reactants
  • Temperature: High temperatures denature enzymes
• How do graphs help in understanding photosynthesis?

  • Show relationships between factors
  • Indicate limiting factors
  • Visualize changes in rates
• What strategies do farmers use to optimize photosynthesis?

  • Greenhouses for heat retention
  • Artificial lighting for extended growth
  • CO2 enrichment for higher rates
  • Fertilizers for nutrient supply