Suppose that sap in the phloem carries sucrose at a concentration \(\rho_s\) moles sucrose per liter of sap, at a speed of \(v_s\) m/s, and that each mole of sucrose has an available energy content \(E_s\). Which expression describes the flux of energy along the phloem?
Illustration by Maxicat Rhododendron
by
Josh Silverman
