What is the function of dicot and monocot leaf,stem and root?
Your question is not clear and appears to be incomplete. Dicot and monocot are two types of angiosperm groups. In dicots, the seeds bear two cotyledons or seed leaves while in monocots, the seed bears a single cotyledon. Otherwise there is no difference in the functions of the other plant parts such as the leaf, stem and root. The roots help in holding the plant firmly to the soil and also absorb water and minerals from the soil, the stem conducts the water, minerals and food from the roots and leaves to the other parts of the plant respectively. The leaves are the chief photosynthetic parts of the plant and prepare food by the process of photosynthesis.
Hope this helps,