Dicot Leaf Cross Section (Dorsiventral Leaf)
(Anatomical Structure of a Dicot Leaf- Ixora, Mangifera, Hibiscus)
Ø Leaves are structurally well adapted to perform the photosynthesis, transpiration and gaseous exchange.
Ø A leaf composed of:
(1). Leaf blade: also called leaf lamina is the flattened expanded part of the leaf chiefly composed of mesophyll tissue and vascular bundles.
(2). Petiole: the stack of leaf
Ø Based on the differentiation of mesophyll, two categories of leaves are present among Angiosperms
(1). Dorsiventral Leaf
(2). Isobilateral Leaf
(1). Dorsiventral Leaf:
Ø Also called bifacial leaf.
Ø They have anatomically different dorsal and ventral sides.
Ø The mesophyll tissue is differentiated into upper palisade and lower spongy tissues.