The book is exceptional in its organization with three major characteristics of plant system i.e. Plant Physiology, Biochemistry and Molecular Biology been provided under one canopy. Physiology, which deals with all the vital activities of a plant and also explains how it reacts to sustain in natural distress similarly within the plant, the types of physiological actions at biochemical level forming innumerable compounds through chains of biochemical reactions at various levels of plant growth and development becomes Biochemistry. However, the curiosity and thirst of knowledge of human being is endless. Man has been providing still inside up to the molecular and genetic levels to understand the nature of biochemical reactions and to control if possible up to the desired level and that is Molecular Biology. Now this is the time to elevate most relevant work of academic and applied importance out of vast research of diverse significance done in the last fifty years.