Nurturing Life Sciences
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#Unit 6. System Physiology – Plant
Auxin was the first growth hormone to be discovered in plants.
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Auxin is required for viability
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Required at some level more or less continuously
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Experiment on coleoptile phototropism
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Paál and Went experiment
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A common feature of all active auxins is a molecular distance of about 0.5 nm between a fractional positive charge on the aromatic ring and a negatively charged carboxyl group.