Multiple Choice
Which of the following statements best summarizes the acid growth hypothesis in an actively growing shoot?
A) Auxin stimulates proton pumps in the plasma membrane and tonoplast.
B) Auxin-activated proton pumps lower the pH of the cell wall, which breaks bonds and makes the walls more flexible.
C) Auxins and gibberellins together act as a lubricant to help stretch cellulose microfibrils.
D) Auxins activate aquaporins that increase turgor pressure in the cells.
Correct Answer:
Verified
Correct Answer:
Verified
Q33: The hormone that helps plants respond to
Q41: Which of the following can function in
Q43: You may have observed plants rotate towards
Q44: Use the figure to answer the following
Q46: Charles and Francis Darwin discovered that _.<br>A)
Q46: Which one of the following hormones regulates
Q47: You have a small tree in your
Q48: A population of plants experiences several years
Q49: Upon exposure to blue light, plants not
Q50: Plant hormones _.<br>A) in plant cells naturally