How do auxins affect apical dominance?
Auxins stimulate the growth of the main, apical shoot and suppress the growth of lateral shoots.
This results in apical dominance.
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What is the effect of auxins on root growth?
High auxin concentrations inhibit root growth, while low concentrations of auxins promote root growth.
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What is synergism in the context of plant hormones?
Synergism is when different hormones work together, complementing each other and giving a greater response than they would on their own.
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What is antagonism in the context of plant hormones?
Antagonism is when substances have opposite effects, for example one promoting growth and one inhibiting it. The balance between them will determine the response of the plant.
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What are auxins?
Auxins are plant growth regulators that can stimulate cell elongation, influencing many aspects of growth including elongation of roots and shoots.
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Where are auxins synthesised in plants?
Auxin, specifically indole 3-acetic acid (IAA), is synthesised in the growing tips (meristems) of shoots and roots, where the cells are dividing.
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How does auxin control growth by elongation?
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