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  4. In C3 plants, the first stable product of photosynthesis during the dark reaction is

Q. In plants, the first stable product of photosynthesis during the dark reaction is

 1705  217 CMC MedicalCMC Medical 2009 Report Error

Solution:

In plants, the first stable product formed during dark reaction is 3-phosphoglyceric acid. Since, it is a 3-carbon compound hence, the pathway is referred as pathway. Oxaloacetic acid (OAA) is the first stable product compound in plants. It is a 4C compound. This acid is converted to another 4C acid malic acid which enters into the chloroplast of bundle sheath cells. In cycle, 3PGA is phosphorylated into 1, 3-diphosphoglyceric acid, which is reduced into 3-phosphoglyceraldehyde.