Light. Fluxes of Solar Radiation and Absorption of Light by Plants. Arrangement of Energy Processes in the Plants. Problems of Integration and Hierarchy of Structures. Thermodynamics of Energy Conversion by Plants. Electrochemistry and Processes of Energy Conversion in Plants. Photochemistry of Photosynthesis and Mechanism of Oxygen Evolution. Energetics of Dark Respiration and Mechanism of Cytochrome Oxidase Functioning. Plants and the Atmosphere: Heat and Moisture Exchange. Energetics of Permeation of Molecules and Ions across Membranes. Transpiration Stream. Entropy Balance of the Plant. Electrical Signals and Long Distance Communication in Plants. Artificial Photosynthesis in Organized Assemblies of Photosynthetic Pigments.The Man and the Plant. Subject Index.