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Plant Physiology — quick quiz

5 real NSEB questions on Plant Physiology. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 4

HARD

In a C4 plant, the initial CO2 fixation occurs in mesophyll cells through the enzyme PEP carboxylase, forming a 4-carbon compound. This compound is then transported to bundle sheath cells where CO2 is released and enters the Calvin cycle. What is the primary advantage of this pathway over C3 photosynthesis?