O-LevelBiologyPlant Nutrition5090/12 · May/June 2014 · Q61 Mark
When carbon dioxide is being used in photosynthesis, what is its diffusion pathway in a leaf after entering a stoma? 1 cell membrane 2 cell wall 3 chloroplast membrane 4 cytoplasm 5 intercellular spaces
A2→1→5→4→3
B2→5→1→3→4
C5→1→2→3→4
D5→2→1→4→3
✓ Correct answer
D: 5→2→1→4→3
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