Question

Which of the following best describes the difference between phloem transport and xylem transport?

• A. Xylem transport requires active pumping at stomata. Phloem doesn't.
• B. Phloem movement relies on the water column in plants and is solar powered. Xylem isn't.
• C. Phloem carries fluid from the soil to the leaves, while xylem is the reverse.
• D. Phloem can reverse direction, depending on the activity of the "source" and "sink" of its materials. Xylem is more unidirectional

Answer 1

The correct option is D

Phloem can reverse direction, depending on the activity of the "source" and "sink" of its materials. Xylem is more unidirectional

Xylem is from root to shoot transport, whereas phloem shows bidirectional transport.