Multiple Choice
Movement of xylem sap from roots to leaves
A) occurs through the apoplast of sieve-tube elements.
B) usually depends on tension, or negative pressure potential.
C) depends on active transport.
D) depends on the pumping of water through aquaporins.
E) results mainly from diffusion.
Correct Answer:

Verified
Correct Answer:
Verified
Q3: The enzyme complex nitrogenase catalyzes the reaction
Q11: What is the driving force for the
Q34: Transpiration in plants requires all of the
Q38: Most of the dry weight of a
Q42: Water potential is generally most negative in
Q45: An example of a mutualistic association between
Q45: Which of the following, if used as
Q47: Pine seedlings grown in sterile potting soil
Q71: All of the following normally enter the
Q83: A young farmer purchases some land in