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1. The bending of root of a plant in response to water is called
2. A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of
3. The root of the plant is
i. positively phototropic but negatively geotropic
ii. positively geotropic but negatively phototropic
iii. negatively phototropic but positively hydrotropic
iv. negatively hydrotropic but positively phototropic
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