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Example Question #31 : Plant Structures
Which of the following is true?
Possible Answers:
Phloem transports water and nutrients, and does not have nuclei, ribosomes, and vacuoles at maturity
Xylem transports water and nutrients, and does not have nuclei, ribosomes, and vacuoles at maturity
Phloem transports sugars, and dies at maturity
Xylem transports sugars, and dies at maturity
Xylem transports water and nutrients, and dies at maturity
Correct answer:
Xylem transports water and nutrients, and dies at maturity
Explanation:
Xylem are water-conducting cells that transport water and nutrients. They die at maturity and leave behind secondary walls. Phloem transports sugars through sieve-tube elements, but do not have nuclei, ribosomes, and vacuoles. However, phloem remains alive at maturity.
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