All of the Following May Function in Signal Transduction in Plants

Question

All of the following may function in signal transduction in plants except
A)calcium ions.
B)nonrandom mutations.
C)receptor proteins.
D)phytochrome.
E)secondary messengers.

Accepted Answer

Nonrandom mutations may affect plant traits, but they are not a functional part of signal transduction in plants. The other choices (A, C, D, and E) are all known to play roles in signal transduction in plants.