A Text-book of Plant Physiology

absorbed absorption acid active alga algæ amount anaerobic respiration animals atoms bacteria bending body Botany branches carbon carbon-dioxide cell-sap cell-wall cells chlorophyll chromatophores clinostat compounds Czapek develop diffusion direction of growth dissolved effects elaborated energy experiments favorable fermentation figures flowers food-materials force formation fungi gametes gases geotropic Gesellsch gravity grow haustoria heat higher plants increase individual induce irritability Jahrb leaf leaves less lifeless living cells living organism living protoplasm lower plants means mechanical molecules movements needed nitrogen non-sexual nutrition osmotic oxidation oxygen parasite parenchyma parent parthenogenesis Pfeffer Pflanzen Pflanzenphysiologie photosynthesis physical physiology position pressure processes produced reaction respiration result root-hairs roots Sachs salts seeds sensitive sexual reproduction soil soluble solution species Spirogyra spores starch stems stimulate stoma stomata structure substances sugar supply surface taking place temperature tendril tion tissues tracheids transpiration turgor vegetative volume wiss wood Zeitung zoöspores