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    I have this question in my homework.. It's about the movement of IAA through plant tissues... One of the plants was kept in nitrogen, and IAA didn't move down it, and the other plant was kept in air, and IAA moved down it as usual

    This is probably blindingly obvious, but does anyone know why one of the plants was kept in nitrogen?
 
 
 
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Updated: January 29, 2010
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