Definition for Abscission
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Revision as of 22:13, 23 March 2014 by Aggiebio (Talk | contribs) (Created page with "[L. ab, away, off + scissio, dividing]<br>In plants, the dropping of leaves, flowers, fruits, or stems at the end of a growing season, as the result of formation of a two-layered...")
[L. ab, away, off + scissio, dividing]
In plants, the dropping of leaves, flowers, fruits, or stems at the end of a growing season, as the result of formation of a two-layered zone of specialized cells (the abscission zone) and the action of a hormone (ethylene).