Multiple choice

The first stable compound of C4 cycle is

  1. oxaloacetic acid

  2. phospho enol pyruvate

  3. ribulose 1,5-diphosphate(RuDP)

  4. fructose 1,6 diphosphate

  5. phosphoglyceric acid

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A Correct answer
Explanation

In C4 plants, phospho enol pyruvate combines with carbon dioxide to form first stable compound oxaloacetic acid.