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Question

How do plants avoid photorespiration?


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Solution

Photorespiration:

  1. Photorespiration refers to the process in which the RuBisCO enzyme oxygenates RuBP with the release of CO2.
  2. It is also named as C2 cycle.
  3. In CAM plants, they open their stomata at night and incorporate CO2 into organic acids, thus preventing photorespiration.
  4. C4 plants also avoid photorespiration by using the Hatch-Slack pathway prior to the Calvin cycle.
  5. The enzyme PEP carboxylase is used in place of RuBisCO to fix CO2.
  6. The C4 and CAM plants prevent photorespiration in this way.

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