Ncert Exercises & Solutions

When CO₂ is added to PEP, the first stable product synthesized is

1. pyruvate

2. glyceraldehyde-3-phosphate

3. phosphoglycerate

4. oxaloacetate

(d) Oxaloacetate is a four carbon compound formed in C₄cycle and is a first stable product, that is why such plants are called C₄ plants.

Rest of the options are incorrect as because

(a) Pyruvate is formed in glycolysis.

(b) Glyceraldehyde-3-phosphateis also an intermediate compound of glycolysis.

Page 219, XI NCERT