Photorespiration Photosynthesis 2 Absorption of water 1 Ascent of sap 1 Bio-physico-chemical phenomena 1 Biology of dormancy 1 Botony 1 Elementary Biochemistry 1 Heterotrophic Plants 1 Metabolisms 1 Mineral Nutrition 1 Mineral Salt absorption 1 Photoperiodism and vernalisation 1 Respiration 1 The Cell 1 The Enzymes 1 Translocation of solutes 1 Transpiration 1