Classification, identification, morphology, ecology and uses of economically important crops. Plant Biodiversity. Environmental influences on crop growth and development. Vegetative and reproductive growth. Plant water relationships. Plant growth substances. Growth kinetics. Plant growth analysis. Yield determination and crop productivity. Seed physiology. Light and plant development: photomorphogenesis and photoperiodism. Source-sink relationship. Photosynthate partitioning in relation to yield. Senescence. Water and plant mineral uptake. Problem-solving and case-studies. Stress physiology.