BRAINCAKEApical Dominance
Auxins (e.g. indoleacetic acid - IAA) are made in the tips of. roots and shoots and in the meristems which occur just behind the tips of roots and shoots. They diffuse through the cells and flow through transport tissue to the zone of cell elongation.
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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
- Plant Growth Responses
- Plant Hormones
- Seed Germination
- Gibberellins: Synergy and Antagonism.
- Leaf Loss
- Flowering and Day-Length
- Preventing Freezing
- Stomatal Control
All 19 lessons in Plant Responses · All AQA A-level Biology topics