This book will help students and researchers of Plant Physiology to expand their knowledge on Stress Physiology due to Climate Change. Part A summarises plant physiology in a way that most people can understand, and even memorise easily. Part B brings together various fields of more advanced physiology, while explaining some of the newest findings and trends in physiology, focusing on drought and heat stress. Part B begins by covering oxidative stress in the cell, then the impact of stress on leaf stomata, the carbon and nitrogen metabolism of plants, and subsequently the underestimated role of the plant vasculature. The final chapter examines four advanced scientific queries that challenge some accepted viewpoints in Plant Physiology. In the end, a summary outlines the "big picture" in Plant Stress Physiology. This book guides the reader from basic knowledge to advanced specifics on major topics of Plant Stress Physiology, and helps the reader address some questions fundamental to plant life itself.