試題詳解

42. Which of the following is not part of the acid-growth hypothesis?

(A) The wall fabric becomes looser (more plastic).

(B) Auxin stimulates proton pumps in cell membranes.

(C) The turgor pressure of the cell exceeds the restraining pressure of the loosened cell wall, and the cell takes up water and elongates.

(D) Lowered pH results in the breakage of cross-links between cellulose microfibrils.

(E) Auxin-activated proton pumps stimulate cell division in meristems.