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| chemical produced in one part of an organism that affects another part of the same organism |
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| cell that has a receptor for a particular hormone |
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| on or in a cell, a specific protein to whose shape fits that of a specific molecular message, such as a hormone |
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| regulatory substance produced in the tip of a growing plant that stimulates cell elongation and the growth of new roots |
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| phenomenon in which the closer a bud is to the stem's tip, the more its growth is inhibited |
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| plant hormone produced in growing roots and in developing fruits and seeds |
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| plant hormone that stimulates growth and may cause dramatic increases in size |
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| plant hormone that inhibits cell division and, therefore, growth |
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| plant hormone that stimulates fruits to ripen |
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Definition
| movement of a plant toward or away from stimuli |
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| tendency of a plant to grow toward a light source |
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| response of a plant to the force of gravity |
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| response of a plant to touch |
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Definition
| a plant response to the relative lengths of light and darkness |
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