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Which of these is not a 4-carbon compound?(a) Aspartic acid(b) OAA(c) Malic acid(d) PGAI had been asked this question during an online exam.This is a very interesting question from Higher Plants Photosynthesis in portion Photosynthesis in Higher Plants of Biology – Class 11

Answer»

Correct OPTION is (d) PGA

For explanation: Oxaloacetic acid or OAA is the FIRST stable product of carbon dioxide fixation in C4 plants. OAA, along with malic acid and ASPARTIC acid are 4-carbon compounds. HOWEVER, PGA is a 3-carbon compound.



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