Photosynthesis — Biology STD 10 — Question

(d) Both (b) and (c)
Explanation:
The elongated palisade parenchyma contains the highest number of chloroplasts per cell and is the primary site of photosynthesis in many plants. Additionally, the irregular spongy parenchyma also contains chloroplasts and facilitates the passage of gases through its abundant intercellular spaces. Beneath the palisade mesophyll the spongy mesophyll cells, also perform photosynthesis as well. Spongy cells act well in high intensity light.