Question 2 • 5120VB Environmental Science Sem B- B
C3 carbon fixation is used by most plant species, so it occurs in more plants than C4 carbon fixation. C4 photosynthesis is especially advantageous in hot, sunny conditions, where it reduces photorespiration; that makes choices A and C incorrect. C3 fixation takes place in mesophyll cells, not only in inner leaf cells as choice D suggests.
AI-written and checked against the verified answer.