A plant hormone may have different effects on target cells due to any of the following except ____________.
A) differences in location relative to the ground B) the integration of several hormonal signals in the tissue C) the action of a cell's hormone receptors upon binding to the hormone D) different gene expression patterns triggered by the hormone E) the concentration of the hormone in the tissue
Temperature extremes,lack of water,and other environmental stresses trigger an increase in ____ synthesis,release,and transport,which helps the plant survive the adverse conditions.
A) cytokinin B) gibberellin C) auxin D) abscisic acid E) ethylene