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    • Question

      In C4 plants, the first stable product of photosynthesis

      is:
      A Phosphoenolpyruvate Correct Answer Incorrect Answer
      B Oxaloacetate Correct Answer Incorrect Answer
      C Phosphoglyceric acid Correct Answer Incorrect Answer
      D Ribulose Correct Answer Incorrect Answer

      Solution

      In C4 plants, the first stable product of photosynthesis is Oxaloacetate.  C4 plants have a unique carbon fixation mechanism that allows them to minimize photorespiration and improve water-use efficiency in hot and dry environments. In these plants, carbon dioxide is first fixed into a four-carbon compound called oxaloacetate, which is then converted to malate or aspartate.

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