Question

what is dark reaction..?​

Answer 1

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.

Explanation:

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Answer 2

Carbon-fixing is another name for the dark reaction. The formation of sugar molecules from carbon dioxide and water molecules occurs in a light-independent process.

• The products of the light reaction are used in the dark reaction, which takes place in the stroma of the chloroplast.
• Through their stomata, plants absorb carbon dioxide from the atmosphere and enter the Calvin cycle.
• The Calvin cycle is a process that converts six molecules of carbon dioxide into one sugar molecule, glucose, thanks to the ATP and NADPH produced during the light reaction.