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Which set of hormones are plant growth promoter hormones ?

(a)ethylene and auxins

(b) ethylene and abscisic acid

(c) Auxins and cytokinins

(d)auxius and abscisic acid.

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Plant growth hormones are grouped into two types:
(a) growth promoters (auxius, gibber ellines, cytokinins)
(b) growth inhibitors (ethylene, abscisic acid,maleic)
Auxins and cytokinins is correct answer.
Hence c is the correct answer.
answered Mar 7, 2014 by meena.p
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