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Plants Botany 67 Pflanzen 48 Reproduction 46 Irritability and movements 42 Nutrition 26 Plant physiology 17 more ... Evolution 16 Plantes 16 Samenpflanzen 15 Systematik 15 Analysis 13 Variation 13 Botanik 12 Assimilation 10 Classification 10 Metabolism 10 Transpiration 10 Fertilization of plants 9 Abnormalities 8 Color 8 Migration 8 Respiration 8 Effect of light on 7 Effect of temperature on 7 Pflanzenfamilie 7 Plantkunde 7 Botanique 6 Leaves 6 Plant anatomy 6 less ...