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Category: Science
Word Count: 559
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Biology

Bio Review Ch 22-27
Control Systems in Plants
•     22.1-Plant hormones are chemical messengers in plants, which coordinate actions in different parts of plants.
o     Auxins- promotes cell elongation/growth at apical meristem. Makes stem bend towards light because the shaded side of stem has more auxin. Also helps fruit develop.
o     Cytokinins- these stimulate cell division especially in roots.
o     Gibberellins- stimulates growth of stems (cell division and elongation), fruit development, and seed g
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