Dorsiventral leaf (Dicots)
  DORSIVENTRAL LEAF:       The dorsiventral leaves are found in  dicots.     In the vertical section of dicot leaf there are mainly divided into  three parts.   They are.     Epidermis   Mesophyll   Vascular Bundles     Epidermis:     The upper and lower epidermis of leaf is covered by  cuticle.     The Adaxial(lower) surface has more number of Stomata than upper surface.Sometimes the upper surface lacks Stomata.     Mesophyll:     The layer present between the upper and lower epidermis is called as mesophyll.     It possess  chloroplast  and carry out photosynthesis. it contains parenchymatous cells.     Mesophyll is two types of parenchymatous cells.       -Palisade parenchyma       -Spongy parechyma     Polisade parenchyma  is an elongated cell,arranged vertically and parallel to each other. present on upper side of mesophyll     Spongy parenchyma  are oval or round loosely arranged situated below the palisade parenchyma extending to the lower epidermis. it contai...