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CBSE Class 10 Answered

What is dark reaction ?
Asked by | 06 Mar, 2008, 07:30: PM
Expert Answer
  • The dark reaction is the second phase of photosynthesis which occurs in the stroma of chloroplasts.
  • The reaction is also known as the biosynthetic phase or Blackman’s reaction or carbon dioxide fixation or Calvin cycle.
  • It uses ATP and NADPH2 for the fixation and reduction of CO2 to form carbohydrates.
  • The dark reaction is independent of light and may take place in the light or dark without the use of light energy.
  • In the dark reaction, CO2 is reduced to carbohydrates in the form of sugar.
Answered by | 06 Dec, 2017, 04:50: PM
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