Botany lecture notes

Dicot Leaf (Dorsiventral Leaf) Structure with PPT

Anatomy of Dicot Leaf PPT

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.

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