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Question

Which of the following is called a dark reaction?
  1. Hatch and Slack pathway
  2. Glycolysis pathway
  3. Z-scheme
  4. Calvin cycle


Solution

The correct option is D Calvin cycle
The Calvin cycle is also called the dark reaction as it is not directly dependent on light. 

Hatch and Slack pathway is another name for the C4 pathway. The plants in which the first stable product is a four carbon molecule i.e., oxalo acetic acid (OAA) are called C4 plants. 

The glycolysis pathway is a metabolic process in which glucose is converted into pyruvic acid and energy is released in the form of ATP. 

The Z-scheme is the oxidation/reduction changes during the light reaction of photosynthesis (non-cyclic photophosphorylation).
 

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