Which are more evolved dicot or monocot plants ?

Solution:

Dicots are considered to be the ancestors of monocot plants. The monocot plants are evolved from the dicots. However, it is considered that monocots are more evolved than the dicots because monocots have adapted themselves very efficiently such as they have a small lifecycle, they utilise the sunlight very efficiently and more. The other evolutionary features of monocots such as withstanding damage comes from grazing and burning of them.

Difference between dicots and monocots
 

Dicots	Monocots
The seeds of these plants have two cotyledons.	The seeds of these plants have a single cotyledon.
The dicot plants mostly have tap root system.	Monocot plants mostly have fibrous root system.
The leaves have reticulate venation.	The leaves have parallel venation.