For 10 points, name these plant structures where photosynthesis takes place.
One type of cell in these structures has S-type and R-type anion channels which open to depolarize the membrane after an influx of potassium ions causes a conformational shift. These structures contain a spongy, permeable membrane below the upper palisade layer of cells. Stipules are attached near the petiole of these structures. The first step of C4 carbon fixation occurs in mesophyll cells in these structures. Reticulate veins in these structures are indicative of dicots. A cuticle on these structures prevents excess water loss through transpiration, which occurs in their stomata. For 10 points, name these plant structures where photosynthesis takes place.
One type of cell in these structures has S-type and R-type anion channels which open to depolarize the membrane after an influx of potassium ions causes a conformational shift.
leaves [prompt on "plants"; prompt on "stomata"; prompt on "guard cells"]