Which of the following supports the finding that sugar translocation from mesophyll cells into companion cells is an active (energy-requiring) process?

Question

Quizplus · Accepted Answer

The fact that sucrose occurs in higher concentrations in companion cells than in the mesophyll cells where it is produced suggests that there is an active transport mechanism involved in the movement of sugar from the mesophyll to the companion cells. If it were a passive process, sucrose would move down its concentration gradient and thus be found in higher concentrations where it is produced.

Which of the Following Supports the Finding That Sugar Translocation