Ncert Exercises & Solutions

23. Draw diagrams of a typical monocot and dicot leaves to show their venation pattern.

Venation is the pattern of distribution of veins and veinlets in the lamina of leaf. It's pattern is different in monocot and dicot leaf.

Monocot leaf

Dicot leaf

The veins run parallel to each other within a lamina.It is called parallel venation.

Parallel venation, e.g., grasses, wheat, maize,etc., (usually found in monocots).

Veins and veinlets form a network in the lamina. It is called reticulate venation.

Reticulate venation, e.g., Hibiscus, bean, pear etc, (usually found in dicots).