The present book has been divided into 14 chapters covering very comprehensive information on all aspects of plant physiology viz., introduction to plant physiology, water, mineral nutrition and photosynthesis, physiology of flowering, plant movements, respiration, seed dormancy and germination, fruit development and ripening, plant growth regulators, sensory photobiology, secondary metabolites, nitrogen metabolism, plant lipid metabolism and plant stress physiology. Related terminology and selected references are also added for the easy understanding and further study on the subject. This book written in simple and understandable language; fully supported by figures, diagrams, equations and formulas to help the beginners. This book would be immensely useful to students of agriculture, horticulture, environmental science, botany and related fields.'