|By The End Of The Subtopic Learners Should Be Able To;|
The vascular bundles (xylem and phloem) form the midrib and veins of the leaf.
A dicotyledonous leaf has a branching network of veins that get smaller as they branch away from the midrib.
|Large surface area||They have a broad shape with a high surface area to volume ratio to increase the absorption of light|
|Thin shape||Allow light to reach all the cells and create a short distance for carbon dioxide to diffuse in and oxygen to diffuse out.|
|Leaf stalk (petiole)||It holds the leaf in the best position to receive light|
|Chlorophyll||It gives the leaves their green colour and converts light energy to chemical energy.|
|Veins||The network of veins is very fine and water has to pass from a vein through only a few cells to reach other cells.
It supports the structure of the leaf and transport substances to and from the leaf.
Glucose + Oxygen → Carbon dioxide + water