Answer: Bundle-sheath cells.
- A Guard cells
- B Epidermal cells
- C Root cortex cells
- D Bundle-sheath cells
Correct answer: D. Bundle-sheath cells
Explanation: The C4 acid travels to the bundle-sheath cells and releases CO2 there for the Calvin cycle - concentrating CO2 around RuBisCO.
Simplified photosynthesis diagram: light energy, CO2, and H2O enter the leaf and are converted in the chloroplast into glucose and O2.
Concept context
Light reactions, the Calvin cycle, C 3 /C 4 /CAM pathways, photorespiration, and factors affecting the rate of photosynthesis. One of the highest-yield NEET chapters.