Sugar Transport In Plants
Which of the following best explains why sugar moves from a leaf source to a growing root?
A
Roots consume sugar; the decreased sugar concentration in the roots creates a pressure gradient that draws more sugar from the source.
B
Roots synthesize sugar; the increased sugar concentration in the roots creates a demand for supplemental sugar production from the source.
C
Roots store sugar; the increased sugar concentration in the roots creates a hormonal imbalance that draws more sugar from the source.
D
Roots release sugar; the decreased sugar concentration in the roots allows the xylem to eliminate excess sugar arriving from the source.