Plant science or botany refers to the holistic study of plants including plant structure, plant reproduction, evolutionary relationships, plant growth, plant taxonomy, plant diseases, plant differentiation, etc. It is a vast subject, which includes methods like optical microscopy, electron microscopy, live cell imaging, etc. to better understand the evolution and processes of plants. The book studies, analyses and upholds the pillars of plant science and its utmost significance in modern times. Different approaches, evaluations and methodologies have been included in it. Such selected concepts that redefine plant science have been presented in the text. It aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline.