Multiple Choice
According to the pressure flow hypothesis of phloem transport,
A) solute moves from a high concentration in the source to a lower concentration in the sink.
B) water is actively transported into the source region of the phloem to create the turgor pressure needed.
C) the combination of a high turgor pressure in the source and transpiration water loss from the sink moves solutes through phloem conduits.
D) the formation of starch from sugar in the sink increases the osmotic concentration.
Correct Answer:

Verified
Correct Answer:
Verified
Q94: The water lost during transpiration is a
Q95: The solute potential (Ψs)of pure water at
Q96: Which of the following processes allowed land
Q97: Given that early land plants most likely
Q98: Which of the following plant structures shares
Q100: Which of the following elements is required
Q101: Most of the dry weight of a
Q102: The earliest vascular plants on land had
Q103: In west Texas,cotton has become an important
Q104: Hydroponic culture is a technique in which<br>A)plants