The planet earth is stuffed with myriads of plant forms ranging from Viruses, Mycoplasma, Bacteria, Fungi, Algae, Lichens, Bryophytes, Pteridophytes to the more complicated forms of higher plants the Gymnosperms and Angiosperms. The plant resources have made substantial contribution to human welfare. The process of human beings has been associated with the use of plant resources especially for the supply of food, fuel, fibre and medicine. Human beings are using plant resources since the beginning of civilization in a variety of ways to suit their needs. With the passage of time, man developed and modified need based methods of cultivation of plants. It has helped in development of new techniques and skills. With the rise in population, human race is facing the problem of satisfying basic needs.