The differentiation of Palisade tissue and spongy parenchyma is found in ______________.
Dorsiventral leaf i.e. Mesophyll is the ground tissue and it occurs between the two epidermal layers. It is heavily composed of chlorenchyma cells. The mesophyll is differentiated into two regions an upper palisade parenchyma and lower spongy parenchyma. Palisade parenchyma is again composed of two or three layers of elongated and compactly arranged chlorenchyma cells.
Also, the isobilateral leaf has undifferentiated mesophyll.
Therefore, the correct answer is option B.