This PDF notes and Tests are designed by expert faculty for CSIR-NET/JRF Life Sciences UNIT 6 Plant Physiology. CSIR SYLLABUS: SYSTEM PHYSIOLOGY - PLANT Sensory photobiology - Structure, function and mechanisms of action of phytochromes, cryptochromes and phototropins; stomatal movement; photoperiodism and biological clocks. Photosynthesis - Light harvesting complexes; mechanisms of electron transport; photoprotective mechanisms; CO2 fixation-C3, C4 and CAM pathways. Photorespiration –ATP synthesis; photorespiratory pathway. Nitrogen metabolism - Nitrate and ammonium assimilation; amino acid biosynthesis. Secondary metabolites - Biosynthesis of terpenes, phenols and nitrogenous compounds and their roles. Solute transport and photoassimilate translocation – uptake, transport and translocation of water, ions, solutes and macromolecules from soil, through cells, across membranes, through xylem and phloem; transpiration; mechanisms of loading and unloading of photoassimilates. Plant hormones – Biosynthesis, storage, breakdown and transport; physiological effects and mechanisms of action. Stress physiology – Responses of plants to biotic (pathogen and insects) and abiotic (water, temperature and salt) stresses. Additional Topics: Seed Germination, Dormancy & Synthetic seeds, Plant Movements, Mineral Nutrition & Senescence