Main differences between dicot and monocot leaves are as follows :
$\begin{array}{l|l|l}
\hline \text{Character} & \text{Dicot leaf} & \text{Monocot leaf} \\
\hline \begin{array}{l}
\text{Type of leaf} \\
\text{Stomata}
\end{array} & \begin{array}{l}
\text{Dorsiventral} \\
\text{Usually more on} \\
\text{lower epidermis}
\end{array} & \begin{array}{l}
\text{Isobilateral} \\
\text{Equal on lower} \\
\text{and upper epidermis}
\end{array} \\
\hline \text{Mesophyll} & \begin{array}{l}
\text{Differentiated} \\
\text{into palisade and} \\
\text{spongy parenchyma} \\
\text{Made up of} \\
\text{Bndifferentiated} \\
\text{parencyma. Just spongy and} \\
\text{above and below} \\
\text{the vascular bundles. Some} \\
\text{parenchymatouscells or} \\
\text{collenchymatouscells are present} \\
\text{upto epidermis.}
\end{array} & \begin{array}{l}
\text{Made up of parenchyma but} \\
\text{just above and} \\
\text{lelow the vascular bundles are} \\
\text{sclerenchymatous cells}
\end{array} \\
\hline \text{Bulliform cells} & \begin{array}{l}
\text{Present, these} \\
\text{cells help in rolling and unrolling} \\
\text{of leaves.} \\
\text{Parallel}
\end{array} \\
\hline \text{Venation} & \begin{array}{l}
\text{Reticulate}
\end{array} \\
\hline
\end{array}$