the rate of photosynthesis

• whats a limiting factor

  its stopping photosynthesis from happening
• what do limiting factors depend on

  environmental conditions
• what are the three main limiting factors

  • light
  • temperature
  • carbon dioxide
• what else is a limiting factor and how

  chlorophyll since the amount of it can be affected by disease or environemental stress
• what are 2 things that can happen if a plant doesnt have enough chlorophyll

  • lack of nutrients
  • chloroplast becomes damaged or not make enough chlorophyll
• what does it mean if a plant doesnt have enough chlorophyll

  rate of photosynthesis reduced since they cant absorb much light
• what does light provide

  energy needed for photosynthesis
• what happens when light levels is raised

  rate of photosynthesis increases steadily but only to a certain point
• what happens beyond the point that rate of photosyntheis stop to increase

  as light intensity increases, the rate will no longer increase
• why wont the rate of photosynthesis increase beyond the point

  • temperature
  • carbon dioxide levels
• in a lab, how can you change the light intensity

  moving a lamp closer to or further away from you plant
• what equipment do you need to use to measure the light intensity

  a light meter
• what is one of the raw materials needed for photosynthesis

  carbon dioxide
• what does carbon dioxide do to the rate of photosynthesis

  only increase it to a point just like light intensity does
• what happens when the rate of photosynthesis reaches to a point (co2 version) and why

  graph flattens out, as the amount of co2 increases, the rate no longer increases
• what does the graph show about co2 when it flattens out

  co2 is no longer the limiting factor
• how do we know that the factor limiting photosynthesis is temperature

  as long as light and co2 are in plentiful supply
• why does temperature affect the rate of photsynthesis

  it affects the enzymes involved
• why can the limiting factor be temperature

  because the temperature is too low
• what happens if the limiting factor is temperature

  the enzymes needed for photosynthesis work more slowly at low temperatures
• what happens if a plant gets too hot

  the enzymes needed for photosynhtesis and its other reactions will be damaged
• at what temperature do the enzymes needed for photosynthesis get damaged

  45 degrees