Topics covered in this course include: Plant water relationship with special emphasis on osmoregulation and water stress in higher plants. Plantligh interaction including the role of light in photosynthesis,  poto-periodism and photomorphogenesis. Plant hormones with special reference to their metabolism, transport and mode of action. Nitrogen metabolism and biological nitrogen fixation. Secondary plant products and defense compounds. Developmental physiology with emphasis on juvenility, senescence and abscission.