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 is mainly made of dead cells like tracheids and vessel elements for water and mineral transport in one direction. Phloem has living sieve - tube elements for two - way transport of organic substances. Option A is wrong as xylem has mostly dead cells. Option B is incorrect as both xylem and phloem are in roots. Option C is wrong as xylem has one - way flow. Option D is wrong as neither xylem nor phloem contains chloroplasts mainly for their transport functions.

Answer:

None of the above options are correct. The main difference is that xylem transports water and minerals in one - way (from roots to other parts of the plant) and consists mainly of dead cells, while phloem transports organic nutrients in a two - way flow and has living cells.