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The Rate Of Photosynthesis

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The Rate Of Photosynthesis


The rate that photosynthesis occurs is dependent on a variety of conditions.

By looking at the equation you would guess that a plant would need a large

amount of water and carbon dioxide for the highest rate of

photosynthesis to occur.

 

There are also other variables to take into account such as temperature and

sunlight. If any of these are lacking then it is called a limiting factor.

 

The limiting factor also depends on the environmental

conditions:


  At night the obvious limiting factor is sunlight

  In the winter months it is temperature

  And in the summer months, when it is warm and bright, carbon dioxide

      can be the  limiting factor

 

 

Rate limiting graphs

Taking these graphs into account, you can artificially control the environments

for plants. This can be done in a number of ways:


  A greenhouse can be used to trap the suns heat in order to make sure

      that the temperature is no longer the limiting factor

  To make sure light is not the limiting factor, artificial lights can used to

       ensure photosynthesis occurs

   Carbon dioxide can also be an issue, however this can be slved using

       a paraffin heater which provides carbon dioxide

 

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How do plants use the glucose

Once photosynthesis is complete plants use glucose in a number of ways


  Respiration – it is used in respiration to produce energy

  Cell walls – glucose can also be used in making cell walls in a plant,

       especially one that has a fast growth rate

  Protein – glucose can be turned into protein.

  Seeds – glucose can be turned into fatty substances called lipids which

       are then stored in seeds

  Starch – the glucose if not used can be stored as starch, and can be used

      when the rate of photosynthesis is low. Starch is insoluble which makes it

      better for storage

 

 

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