Photosynthetic Pathway
Asked by Sana S · 1 year ago
What is the main difference in the photosynthetic pathway between C3 and C4 plants?
1 Answer
The main difference in the photosynthetic pathway between C3 and C4 plants is:
C3 plants:
- Use the Calvin cycle directly for carbon fixation
- First stable compound is a 3-carbon molecule (3-phosphoglyceric acid)
- Carbon fixation occurs in mesophyll cells
C4 plants:
- Have an additional step before the Calvin cycle
- First stable compound is a 4-carbon molecule (oxaloacetic acid)
- Carbon fixation occurs in mesophyll cells, and the Calvin cycle takes place in bundle sheath cells
C3 plants:
- Use the Calvin cycle directly for carbon fixation
- First stable compound is a 3-carbon molecule (3-phosphoglyceric acid)
- Carbon fixation occurs in mesophyll cells
C4 plants:
- Have an additional step before the Calvin cycle
- First stable compound is a 4-carbon molecule (oxaloacetic acid)
- Carbon fixation occurs in mesophyll cells, and the Calvin cycle takes place in bundle sheath cells
NEET Faculty · 1 year ago
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