Photosynthesis

• What is the process that plants use to trap light energy?

  Photosynthesis
• What type of reaction is photosynthesis?

  Endothermic reaction
• From where do seedlings obtain energy to grow?

  From light energy trapped by photosynthesis
• Where does photosynthesis take place in a plant?

  In the leaves
• What green chemical in leaves absorbs light energy?

  Chlorophyll
• What are the inputs for photosynthesis?

  Carbon dioxide and water
• What is produced as a byproduct of photosynthesis?

  Oxygen
• What is the word equation for photosynthesis?

  Carbon dioxide + water → glucose + oxygen
• What happens to the rate of photosynthesis when light intensity is increased?

  The rate of photosynthesis increases
• What does it mean if light intensity is a limiting factor?

  Photosynthesis is not as fast as possible
• What happens when light intensity is increased beyond a certain point?

  The rate of photosynthesis levels off
• What is the limiting factor when light intensity is no longer increasing the rate of photosynthesis?

  Carbon dioxide level
• What happens to the rate of photosynthesis when carbon dioxide levels are increased?

  The rate of photosynthesis increases
• What is the effect of chlorophyll amount on photosynthesis?

  Less chlorophyll means lower photosynthesis rate
• How does temperature affect the enzymes involved in photosynthesis?

  Higher temperatures increase enzyme activity
• What happens to enzymes at very high temperatures?

  They denature and the rate falls
• What are the factors that affect the rate of photosynthesis?

  • Light intensity
  • Carbon dioxide level
  • Amount of chlorophyll
  • Temperature
• What are the stages of photosynthesis?

  1. Light absorption by chlorophyll
  2. Conversion of carbon dioxide and water into glucose
  3. Production of oxygen as a byproduct
• What is the significance of photosynthesis for plants?

  • Provides energy for growth
  • Produces oxygen for respiration
  • Converts light energy into chemical energy