noun[mass noun] Botany
The growth or turning of plant roots towards or away from moisture.
- Such seedlings behaved identically to seedlings grown on uncovered filter paper and, hence, any possible effects of hydrotropism were eliminated.
- Our experiment proved that hydrotropism really does exist, and watering the plants differently affects root growth.
- These analyses indicate that the application of new genetic screens for dissecting complex signaling phenomena such as hydrotropism is promising.
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Line breaks: hydro|trop¦ism
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