Growth and Development, cell structure, Biogenesis and cell expansion. Phytochrome and light control 0f plant development.Stomata movement and morphogenesis. Growth regulators /Hormones, Photosynthesis; Carbon and light reaction. Photosynthetic pathways, Physiological and Ecological considerations. Translocation in the Phloem ,Respiration and Lipid metabolism. Water transport through the Xylem. The Cohesion-Tension Theory. Stomata Control. The Transpiration Ratio as a measure of the Relationship between water loss and Carbon Gain. Recent Advances.