Question

question 4 0.5 points on your cells discussion, you saw plant cells used to transport sugar. one cell of the phloem (the sieve tube element) sits immediately beside the water - carrying cells called xylem. when a sugar is actively pumped into the sieve tube, what is likely to happen? a sugar will diffuse out of the sieve tube. b water will move out of the sieve tube into the xylem. c water will move out of the xylem into the sieve tube. d sugar will diffuse into the xylem.

Explanation:

When sugar is actively pumped into the sieve tube, the solute - sugar concentration inside the sieve tube increases. According to the principles of osmosis, water moves from an area of lower solute concentration (xylem) to an area of higher solute concentration (sieve tube). So water will move out of the xylem into the sieve tube.

Answer:

B. Water will move out of the xylem into the sieve tube.