This book has tremendous importance, especially for those who are first degree biology students and instructors as teaching aid. It will provide the students with learning opportunities that will enable them acquire knowledge and understanding on the physiological and biochemical functions of plants. Moreover, it is important to recognize that these functions depend on structures, whether the process is gas exchange in the leaf, water conduction in the xylem, and photosynthesis in the chloroplast. At end of each chapter, there are several questions that sum up the concepts of each part and related laburatory activities to be accomplished by students.