Dicot leaves are characterised by having differentiated upper and lower epidermis. Mesophyll is divided into palisade parenchyma and spongy parenchyma. Chloroplasts are more in palisade parenchyma and less in spongy parenchyma. In dicots, stomata are usually absent on upper epidermis and venation is usually reticulate. In monocots, venation is parallel and stomata are present on both the epidermis. Leaf mesophyll in monocots is undifferentiated and all cells are like spongy parenchyma.