In C3 plants, the first stable product formed after CO2 fixation by rubisco is:

Glucose, a 6-carbon compound under most conditions studied

Malic acid, a 4-carbon compound in most observed cases

Oxaloacetate, a 4-carbon compound in standard reference material

In C3 plants, the first stable product formed after CO2 fixa… — Answer & Explanation

A Glucose, a 6-carbon compound under most conditions studied
B Malic acid, a 4-carbon compound in most observed cases
C Oxaloacetate, a 4-carbon compound in standard reference material
D 3-phosphoglycerate (PGA), a 3-carbon compound

Correct answer: D. 3-phosphoglycerate (PGA), a 3-carbon compound

Explanation: In C3 plants, rubisco fixes CO2 onto RuBP to form an unstable 6-carbon intermediate that immediately splits into two molecules of 3-phosphoglyceric acid (PGA), a 3-carbon compound.

Concept context

Light reactions, the Calvin cycle, C3/C4/CAM pathways, photorespiration, and factors affecting the rate of photosynthesis. One of the highest-yield NEET chapters.

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In C3 plants, the first stable product formed after CO2 fixation by rubisco is:

Concept context

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