The acid growth hypothesis links  

A.  oligosaccharins to pH changes.
B.  cytokinin to thigmonasty.
C.  auxin to cell wall expansion.
D.  gibberellin to root elongation.
E.  ethylene to leaf abscission.


C.  auxin to cell wall expansion.

The acid growth hypothesis provides a model linking auxin to cell wall expansion.

Biology & Microbiology

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