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How do tropism differ from nastism ? Page 263 Chapter - 14.Control and Co-Ordination in Organisms

Answer»

Nastic movements- are non-directional RESPONSES of plants to a stimuli such as temperature,LIGHT,change in turgor pressure or change in ION concentration. EG- dropping of the Mimosa leaf on being PRICKED. Tropisms- are directional responses to a directional stimulus.



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