Researches and studies of plants at molecular levels of structure and functioning have facilitated the development of significant techniques for plant breeding, crop protection, etc. It has also influenced the discipline of biotechnology to a great extent. Replete with significant details and examples, this book covers the structure, function, mechanisms and regulatory processes which occur within plants at molecular levels. Also included in this book are detailed explanations of the various concepts and applications of plant genomics which would enhance the knowledge of the readers. This book strives to aid the students and researchers of botany and associated fields of biology.