Rate of photosynthesis

• Temperature 


  As the temperature rises, the rate of the reaction speed up

  The enzymes however denature after reaching the optimum

  If the temperature gets too high, the enzymes denature and the rate of photosynthesis would fall
• Light


  More light, higher rate of reaction

  Little or no light, photosynthesis stops
• Chlorophyll

  More chlorophyll, more light absorbed, higher rate of reaction
• Carbon dioxide


  More CO2, more of an amount of a reactant, more glucose produced, higher rate of photosynthesis
• These factors interact and any one of them could be the factor limiting photosynthesis

  Limiting factors are important in the economics of enhancing the conditions in the greenhouse to gain the maximum rate of photosynthesis while still maintaining profit
• Inverse square law

  Relationship between light intensity and rate of photosynthesis isn’t simple

  Light intensity involves the inverse square law

  As the distance of the light from the plant increases, light intensity decreases

  States that light intensity is inversely proportional to the square of the distances from the light source
• Inverse square law

  Light intensity is inversely proportional to 1/(distance from light source)squared

  1, 1/4, 1/9, 1/16 etc…
• RP - Photosynthesis 


  instructions

  
• RP - Photosynthesis 


  Instructions

  
• Limiting factor

  A factor which prevents an increase in the rate of photosynthesis
• RP Photosynthesis- variables

  Control- amount of pondweed, temp, CO2 concentration and time

  Independent - distance away from light source

  Dependent - number of oxygen bubbled produced