Which Statement Does Not Describe an Effect of Auxin

Multiple Choice

Which statement does not describe an effect of auxin?

A) Auxin affects gene expression in a manner similar to that of gibberellin.
B) Auxin stimulates the expression of the proton pump.
C) Auxin helps to direct the newly synthesized proton pump to the plasma membrane.
D) Auxin increases H⁺ pumping, which activates cell wall proteins that relax the wall.
E) Auxin drives the conversion of P_r to P_fr.