The generally accepted explanation for the movement of organic compounds in phloem is ____.
A) the cohesion-tension theory
B) the pressure flow theory
C) active transport
D) the transpiration-pull theory
E) root pressure

Question

The generally accepted explanation for the movement of organic compounds in phloem is ____.  
A) the cohesion-tension theory
B) the pressure flow theory
C) active transport
D) the transpiration-pull theory
E) root pressure

Quizplus · Accepted Answer

The pressure flow theory is the generally accepted explanation for the movement of organic compounds in phloem. This theory states that the movement of organic compounds through phloem tissue is driven by a positive pressure gradient.

The Generally Accepted Explanation for the Movement of Organic Compounds