Rooting Powder
Applying auxin to cut shoots causes the growth of roots. Gardeners use this to grow new plants from plant cuttings. Usually the cut stem is deeped in rooting powder containing auxin.

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Key terms in this lesson
- auxin
- A plant growth hormone, produced at the tips of shoots and roots, that stimulates cell elongation, maintains apical dominance and controls tropisms.
More in Plant Responses
- Pheromones
- Response to Touch
- Tropisms
- Growing inthe Dark
- Geotropism
- Fruit Ripening
- Hormonal Weedkillers
- Other Uses of Plant Hormones
All 19 lessons in Plant Responses · All AQA A-level Biology topics