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Question
Which of the following occurs in the CAM pathway during the night?
Which of the following occurs in the CAM pathway during the night?
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Solution
The correct option is B Malic acid is stored in the vacuole
During the night, malic acid is stored in the vacuole. CO2 can enter into the leaves through the stomata during the night. PEP, on receiving CO2, gets converted to oxaloacetic acid. The oxaloacetic acid is then converted to malic acid. In this way, CO2 is stored in the form of malic acid in the vacuoles during the night. During the day, this malic acid is converted to malate. Malate is then converted to pyruvate, and CO2 is released. This CO2 is then used in the Calvin cycle.
During the night, malic acid is stored in the vacuole. CO2 can enter into the leaves through the stomata during the night. PEP, on receiving CO2, gets converted to oxaloacetic acid. The oxaloacetic acid is then converted to malic acid. In this way, CO2 is stored in the form of malic acid in the vacuoles during the night. During the day, this malic acid is converted to malate. Malate is then converted to pyruvate, and CO2 is released. This CO2 is then used in the Calvin cycle.
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