Use the pressure-flow model to explain what is likely to happento water, pressure and solute potential in the following scenariosand how that is likely to affect sugar transport in the phloem:
a. Potatoes rapidly growing and accumulating starch.
b. An Arabidopsis thaliana mutant homozygous for aloss-of-function mutation in the sucrose-H+ transporter SUC2.
c. A plant watered with salty water accumulating higher thannormal levels of Na+ and Cl- ions in the root xylem.
d. A plant in which all emerging fruit are removed.
e. Potential adaptation(s) in Sea Asparagus (Salicorniavirginica) growing on BC ocean beaches to get sugar to move fromphotosynthetic leaves to non-photo-synthetic leaves. These plantstransport Na and Cl ions in the xylem and secrete it fromleaves.
