What is the difference between tropic movement and nastic movement

1.	What is the difference between tropic movement and nastic movement
Answer» \tTropic movementsNastic movements1. It can be easily observed in stems and roots.1. It is clearly observed in bilaterally symmetrical organs such as leaves and petals of flowers.2. It is due to unilateral stimulus which causes unequal growth on the two sides of a stem, root and tendril.2. The movements occur due to stimulus of light and temperature.3. Movement is related to stimulus, i.e., plant organs either move towards source of stimulus or away from it. Stimuli which causes movements in plants are gravity, light, touch, water and chemical substances.3. Opening and closing of flowers of evening primrose and tobacco at the night and day respectively. This is due to unequal growth.4. Example: Bending of root towards gravity and shoot towards light.4. Example: Leaves of ‘touch-me-not’ plant bend and droop on touching.\t Thanks

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