Question

question 9 of 10 how does xylem differ from phloem? a. xylem has living cells. b. xylem is found in the roots. c. xylem has a two - way flow. d. xylem contains chloroplasts.

Explanation:

Xylem and phloem are plant vascular tissues. Xylem's main function is to transport water and minerals from roots to the rest of the plant and it is made up of tracheids, vessel elements (which are dead at maturity), xylem parenchyma and xylem fibers. Phloem transports organic compounds (like sugars) produced during photosynthesis and has sieve - tube elements, companion cells (living cells), phloem parenchyma and phloem fibers. The key differences include cell viability (mostly dead in xylem, mostly living in phloem) and flow direction (unidirectional in xylem, bidirectional in phloem).

Answer:

None of the above options are correct. Xylem consists mainly of dead cells and transports water and minerals in one - way from roots to other parts of the plant, while phloem has living cells and transports organic nutrients bidirectionally.

If we assume there is a correct option among the given ones, let's analyze them:

• A. Xylem has mostly dead cells, not living cells, so A is incorrect.
• B. Xylem is found in roots, stems, and leaves, and this is not a unique differentiating factor from phloem as phloem is also found in these parts, so B is incorrect.
• C. Xylem has a one - way flow (from roots upwards), not a two - way flow, so C is incorrect.
• D. Xylem does not contain chloroplasts. Chloroplasts are mainly found in photosynthetic cells like mesophyll cells of leaves, so D is incorrect.