Plant Hormones

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Plasticity is controlled by hormones

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5 Terms

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Ethylene

ripening hormone
epinastic growth (upper side of leaf grows faster than lower side so leaves curl downwards)

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Auxin

apical dominance, suppresses growth in lateral buds so plant grows taller rather than outwards

In leaves, stomata opens

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Gibberellins

in stems - stem elongation
in seeds - sprouting
in flowers - buds open

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Abscisic Acid

In seeds and buds - prevents growth
In leaves - closes stomata

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Cytokinins

In Roots - stimulates growth and differentiation
In leaves - Prevents aging (senescence)