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7 Cards in this Set
- Front
- Back
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auxin
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produced in: shoot apical meristems; young leaves
main funct: cell elongation in young stems at low concentrations; apical dominance (retards lateral buds); phototropism and gravitropism |
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cytokinins
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produced: (mainly in) roots
main functions: regulate cell div in shoots and roots; modifies apical dominance (promotes lateral buds); anti aging effects on cells |
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Gibberellins (GAs)
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produced in: apical bud and root meristems; young leaves; developing seeds
main functions: stem elongation (internodes);fruit growth; seed germination |
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Abscisic acid (ABA)
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produced in: all cells. moves in phloem and xylem
main fucnt: drought tolerance (causes stomata closing); promotes dormancy |
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ethylene
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produced all over, in high conc leaf abscission, fruit ripening, wounding
main fuct: leaf ab, fruit ripen,triple response |
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statolthis
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specialized plastids that contain dense, hard grain
responsibily for gravitropism they may redistribute auxin |
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apoptosis
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ethylene programmed cell death
during flooding, creates air tubes |
